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Asymmetric synthesis of (−)-solanidine and (−)-tomatidenol

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Org. Biomol. Chem., 2020, 18,3169-3176
DOI: 10.1039/D0OB00457J, Paper
Yun Wang, Guanxin Huang, Yong Shi, Wei-sheng Tian, Chunlin Zhuang, Fen-Er Chen
The asymmetric synthesis of (−)-solanidine (1) and (−)-tomatidenol (2) has been achieved by employing a cascade ringswitching reaction and a cascade azide reduction/intramolecular reductive amination with 32% and 18.7% overall yields respectively.
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Synthesis and aggregation behaviour of single-chain, 1,32-alkyl-branched bis(phosphocholines) – part 2: lateral chain length triggers self-assembling from sheets to fibres to vesicles

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00534G, Paper
Kai Gruhle, Max Tuchtenhagen, Sindy Müller, Gerd Hause, Annette Meister, Simon Drescher
The synthesis of six single-chain, alkyl-branched bolalipids and first investigations of the lyotropic behaviour of these lipids are reported.
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Synthesis of disaccharide modified berberine derivatives and their anti-diabetic investigation in zebrafish using a fluorescence-based technology

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00327A, Paper
Lizhen Wang, Haotian Kong, Meng Jin, Xiaobin Li, Rostyslav Stoika, Houwen Lin, Kechun Liu
Diglucose modified berberine derivatives can dramatically promote the uptake of 2-NBDG in both zebrafish larvae and their eyes.
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Photocatalytic xanthate-based radical addition/cyclization reaction sequence toward 2-biphenyl isocyanides: synthesis of 6-alkylated phenanthridines

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00136H, Communication
Pedro López-Mendoza, Luis D. Miranda
A photocatalytic xanthate-based radical addition/cyclization reaction cascade toward 2-biphenylisocyanides is described as a practical and modular approach to 6-alkylated phenanthridines.
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Catalyst- and Solvent-Free Efficient Access to N-Alkylated Amines via Reductive Amination using HBPin

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00740D, Communication
ARNAB RIT, Vipin Kumar Pandey, Somnath Bauri
A sustainable approach which works under catalyst- and solvent-free conditions for the synthesis of structurally diverse secondary amines has been uncovered. This one-pot protocol works efficiently at room temperature and...
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A laccase-catalysed tyrosine click reaction

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00650E, Communication
Shinichi Sato, Keita Nakane, Hiroyuki Nakamura
The tyrosine click reaction of peptides/proteins with the tyrosine modification reagent, N-methyl luminol, was catalysed by a laccase in the presence of molecular oxygen (O2) at 37 °C.
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Divergent syntheses of okaramines C, J, L, and S-U

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00587H, Communication
Xiao Wan Li, Tong xu Si, Ya-Ping Liu, Mingzhong Wang, Albert S. C. Chan
The total synthesis of six novel okaramines (C, J, L, and S-U) was accomplished with a precise synthesis scheme involving few steps and with practical yield of 6.7%-23.0%. The significance...
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Electrochemically enabled functionalization of indoles or anilines to synthesis of hexafluoroisopropoxy indole and anilinederivatives

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00157K, Communication
Zu-yu Mo, Xin-Yu Wang, Yu-zhen Zhang, Li Yang, Hai-Tao Tang, Ying-Ming Pan
An environmentally benign electrochemically enabled site-selective functionalization of indole or aniline derivatives with hexafluoroisopropanol in the presence of tetrabutyl ammonium hexafluorophosphate as redox catalyst and electrolyte was demonstrated in this...
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Synthesis of Glycosyl Sulfoximines by a Highly Chemo- and Stereoselective NH- and O-Transfer to Thioglycosides

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00647E, Paper
Arianna Tota, Claudia Carlucci, Luisa Pisano, Giuliano Cutolo, Guy James Clarkson, Giuseppe Romanazzi, Leonardo Degennaro, James A Bull, Patrick Rollin, Renzo Luisi
A synthesis of unprecedented and stable glycosyl sulfoximines is reported. The developed strategies represent the first examples of highly stereoselective sulfoximine formation directly from thioglycosides. X-ray analysis confirmed the structure...
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Blue emissive dimethylmethylene-bridged triphenylamine derivatives appending cross-linkable groups

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00622J, Paper
Kangyu Zhou, Hongfei Pan, Yongjie Zhang, Houchen Wang, Xiaofei Dong, Xiangkui Ren, Xianggao Li, Shirong Wang, Zhijian Chen
Blue-emissive and cross-linkable dimethylmethylene-bridged triphenylamine derivatives were synthesized and their optical and electrochemical properties were investigated.
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Synthesis and photophysical properties of selenopheno[2,3-b]quinoxaline and selenopheno[2,3-b]pyrazine heteroacenes

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Org. Biomol. Chem., 2020, Accepted Manuscript
DOI: 10.1039/D0OB00718H, Paper
Amol Sonawane, Atsushi Shimozuma, Taro Udagawa, Masayuki Ninomiya, Mamoru Koketsu
In this paper, we report the novel synthesis of three different heterocycles namely 2-arylselenopheno[2,3-b]quinoxaline, 3-(aryl/alkylselanyl)-2-arylselenopheno[2,3-b]quinoxaline and 6-phenyl-7-(arylselanyl)selenopheno[2,3-b]pyrazine derivatives from the corresponding 2,3-dichloroquinoxaline and 2,3-dichloropyrazine derivatives. Further, photophysical properties were investigated...
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Three-component synthesis of 1,4-benzothiazines via iodide-catalyzed aerobic C–H sulfuration with elemental sulfur

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Org. Biomol. Chem., 2020, 18,3234-3238
DOI: 10.1039/D0OB00074D, Communication
Jingjing Jiang, Xiaolong Tuo, Zhuquan Fu, Huawen Huang, Guo-Jun Deng
Five to Six: Beyond the well-established thiazole formation from elemental sulfur, this method provides the first access to the corresponding six-membered N,S-heterocyclic products via direct functionalization of multiple C–H bonds.
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The quasi-irreversible inactivation of cytochrome P450 enzymes by paroxetine: a computational approach

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Org. Biomol. Chem., 2020, 18,3334-3345
DOI: 10.1039/D0OB00529K, Paper
Emadeldin M. Kamel, Al Mokhtar Lamsabhi
The potency of paroxetine as a P450 inhibitor is mainly attributed to the availability of two active sites on its structure, its compatibility with P450's active site and the ease of its tight coordination to heme iron.
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Synthesis of methylene cyclopropane-fused chromenes and dihydroquinolines by sequential [4 + 2]- and [1 + 2]-annulation

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Org. Biomol. Chem., 2020, 18,3303-3311
DOI: 10.1039/D0OB00389A, Paper
Tianyu Lu, Xuange Zhang, Zhiwei Miao
A base promoted sequential [4 + 2]- and [1 + 2]-annulation of 2-hydroxychalcones or 2-tosylaminochalcones with prop-2-ynylsulfonium salts was developed.
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A domino annulation approach to 3,4-diacylpyrrolo[1,2-a]pyrazines: decoration of pyrazine units

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Org. Biomol. Chem., 2020, 18,3324-3333
DOI: 10.1039/D0OB00444H, Paper
Anuradha Dagar, Yohan Seo, Wan Namkung, Ikyon Kim
A new one-pot, sequential three-component access to 3,4-diacylpyrrolo[1,2-a]pyrazine was achieved from the reaction of an α-haloketone, azide, and N-substituted pyrrole-2-carboxaldehyde under mild reaction conditions.
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Synthesis of phenanthridines by I2-mediated sp3 C–H amination

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Org. Biomol. Chem., 2020, 18,3312-3323
DOI: 10.1039/D0OB00433B, Paper
Benyao Fang, Jiao Hou, Jinyue Tian, Wenquan Yu, Junbiao Chang
An I2-mediated transition-metal-free sp3 C–H amination reaction is established for phenanthridine synthesis in an efficient and scalable manner.
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Copper-catalyzed direct amination of benzylic hydrocarbons and inactive aliphatic alkanes with arylamines

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Org. Biomol. Chem., 2020, 18,3263-3268
DOI: 10.1039/D0OB00491J, Communication
Hua Yao, Bo Xie, Xiaoyang Zhong, Shengzhou Jin, Sen Lin, Zhaohua Yan
A new synthetic method toward direct C–N bond formation through saturated C–H amination of benzylic hydrocarbons and inactive aliphatic alkanes with primary aromatic amines under an inexpensive catalyst/oxidant (Cu/DTBP) system has been developed.
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Synthesis of α-CF3-substituted E-dehydroornithine derivatives via copper(I)-catalyzed hydroamination of allenes

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Org. Biomol. Chem., 2020, 18,3274-3280
DOI: 10.1039/D0OB00580K, Paper
Anna N. Philippova, Daria V. Vorobyeva, Florian Monnier, Sergey N. Osipov
Novel α-CF3-substituted E-dehydroornithine derivatives have been synthesized via the Cu(I)-catalyzed hydroamination of α-CF3-α-allenyl-α-aminocarboxylates/phosphonates with different amines.
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KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-a]quinoxalines and N-arylsulfonylhydrazones

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Org. Biomol. Chem., 2020, 18,3360-3366
DOI: 10.1039/D0OB00494D, Paper
Zhen Yang, Jing He, Yueting Wei, Weiwei Li, Ping Liu
A series of diverse fused [1,2,4]triazolo[3,4-c]quinoxalines was obtained by an efficient KI/TBHP-promoted [3 + 2] cycloaddition of pyrrolo[1,2-a]quinoxalines and N-arylsulfonylhydrazones.
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O-Cyclopropyl hydroxylamines: gram-scale synthesis and utility as precursors for N-heterocycles

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Org. Biomol. Chem., 2020, 18,3281-3287
DOI: 10.1039/D0OB00611D, Paper
Kaitlyn Lovato, Urmibhusan Bhakta, Yi Pin Ng, László Kürti
A novel and scalable synthesis of O-cyclopropyl hydroxylamines is reported. These compounds are bench-stable and have been shown to be practical precursors for the synthesis of N-heterocycles via a di-heteroatom [3,3]-sigmatropic rearrangement.
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Dipyrazolodioxadiazocines as shelf-stable “ready-to-use” precursors for an in situ generation of enolate-iminium 1,4-dipoles: a straightforward atom-economical approach to pyrazolo[5,1-d][1,3,5]dioxazines

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Org. Biomol. Chem., 2020, 18,3382-3391
DOI: 10.1039/D0OB00451K, Paper
Vladimir E. Zhulanov, Valeria A. Vigovskaya, Maksim V. Dmitriev, Pavel S. Silaichev, Andrey N. Maslivets, Michael Rubin
Generation of cyclic enolate-iminium 1,4-dipoles via thermolysis of dipyrazolodioxadiazocines in the presence of ketones allowed for efficient preparation of pyrazolo[5,1-d][1,3,5]dioxazines.
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Controlling the liberation rate of the in situ release of a chemical fuel for the operationally autonomous motions of molecular machines

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00669F, Paper
Chiara Biagini, Giorgio Capocasa, Daniele Del Giudice, Valerio Cataldi, Luigi Mandolini, Stefano Di Stefano
Aminolysis of the anhydride of 2-cyano-2-phenylpropanoic acid can be employed to conveniently regulate the liberation rate of the related acid which, in turn, can be used as a fuel for acid–base operated molecular machines.
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A Selectfluor-promoted oxidative reaction of disulfides and amines: access to sulfinamides

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB00720J, Paper
Haibo Mei, Jiang Liu, Romana Pajkert, Gerd-Volker Röschenthaler, Jianlin Han
An unprecedented metal-free oxidative reaction of disulfides and amines with Selectfluor as a mild oxidant under aerobic conditions was developed.
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Correction: Nickel-catalyzed cyanation of phenol derivatives activated by 2,4,6-trichloro-1,3,5-triazine

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Org. Biomol. Chem., 2020, Advance Article
DOI: 10.1039/D0OB90052D, Correction
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Liang Wang, Yaoyao Wang, Jun Shen, Qun Chen, Ming-Yang He
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Fire arm, opening an eatery: get licence application forms online

By archive.indianexpress.com
Published On :: Tue, 04 Aug 2009 12:11:15 GMT

Now, getting a licence for a fire-arm or operating an eatery will be easy with Delhi Police on Tuesday launching a dedicated website for its Licencing Branch.


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DMRC delays inauguration of Yamuna Bank-Noida line

By archive.indianexpress.com
Published On :: Mon, 10 Aug 2009 12:46:35 GMT

Delhi Metro has delayed the inauguration of the Yamuna Bank-Noida line by a month.


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UP: 63 flee quarantine centre, all traced

By timesofindia.indiatimes.com
Published On :: Sat, 09 May 2020 10:47:47 IST


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Fee hike: Noida schools to pay Rs 5 lakh fine

By timesofindia.indiatimes.com
Published On :: Sat, 09 May 2020 04:33:00 IST

District magistrate Suhas LY issued a set of guidelines, primarily on fees, for schools on Thursday night and said flouting any of the norms could lead to a school being fined up to Rs 5 lakh.


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Delhi: Liquor hunt shifts online, site crashes

By timesofindia.indiatimes.com
Published On :: Sat, 09 May 2020 05:24:46 IST

The Delhi government's initiative to reduce crowding outside liquor stores by issuing e-tokens - one could book a time slot to buy the tipple without getting into long queues - failed to work as the excise department website crashed due to heavy rush late Thursday.


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Plea on metro card-address proof linking declined

By timesofindia.indiatimes.com
Published On :: Sat, 09 May 2020 16:37:36 IST


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'I can't imagine how A-list actors manage their lives'

By www.rediff.com
Published On :: Wed, 28 Aug 2019 09:00:31 +0530

'Sometimes, I wish someone would tell me that this will happen at this point in time, so I know how my life will be. I don't know what my evening is like. I don't know what my tomorrow will be like. The uncertainty sometimes takes a toll on me.'


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'No one expects from me to play a lead heroine'

By www.rediff.com
Published On :: Tue, 03 Sep 2019 12:22:18 +0530

'I've been tagged as a Punchnama girl, where I break everyone's hearts. I wanted to be a heroine in that film but what did they make me?'


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'I have not entertained negativity in my life'

By www.rediff.com
Published On :: Thu, 09 Jan 2020 09:57:17 +0530

'Chhapaak is definitely the most challenging film of my career.''I have gone through many emotionally challenging experiences, but none affected me the way it did when I played an acid attack survivor.'


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Folklife News & Events: AFC Henry Reed Fund Award Deadline March 02

By www.loc.gov
Published On :: Tue, 25 Feb 2020 09:39:26 -0600

This is a reminder that the American Folklife Center at the Library of Congress invites applications for the Henry Reed Fund Award, which supports activities directly involving folk artists such as recording projects, apprenticeships, or performances. Find information about the Henry Reed Fund Award and other fellowships at the link--scroll down for the Henry Reed Fund. The past recipients link will also help provide a useful history of the award.

The deadline is 12:00 midnight, March 2, 2020.

Click here for more information.


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Do we need a loneliness minister?

By timesofindia.indiatimes.com
Published On :: Sun, 25 Feb 2018 02:00:00 IST

One of the many ironies of modern living is that while technology is bringing people closer, the sense of loneliness is growing. That’s because a text message can never replace a hug, and virtual Siri a real friend. ​


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Structures Congress 2013: bridging your passion with your profession: proceedings of the 2013 Structures Congress: May 2-4, 2013, Pittsburgh, Pennsylvania / sponsored by the Structural Engineering Institute (SEI) of the American Society of Civil Engineer

By library.mit.edu
Published On :: Sun, 15 Nov 2015 06:05:01 EST

Barker Library - TA440.S87 2013


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Concrete and durability of concrete structures: August 11-15, 2013, Cancun, Mexico / editors, L. E. Rendon Diaz Miron, N. Ramirez Salinas, B. Martinez Sanchez

By library.mit.edu
Published On :: Sun, 6 Dec 2015 06:11:13 EST

Barker Library - TA439.S96 2013


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Self-sensing concrete in smart structures / Baoguo Han, professor, School of Civil Engineering Dalian University of Technology Dalian, China, Xun Yu, associate professor, Mechanical and Energy Engineering, University of North Texas, Denton, TX. USA, Jinp

By library.mit.edu
Published On :: Sun, 7 Feb 2016 06:11:21 EST

Barker Library - TA440.H26 2014


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Thermal stresses and temperature control of mass concrete / Zhu Bofang, China Institute of Water Resources and Hydropower Research, and Chinese Academy of Engineering

By library.mit.edu
Published On :: Sun, 7 Feb 2016 06:11:21 EST

Barker Library - TA440.Z485 2014


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Successful women ceramic and glass scientists and engineers: 100 inspirational profiles / Lynnette D. Madsen, Ph.D.

By library.mit.edu
Published On :: Sun, 16 Apr 2017 06:05:53 EDT

Hayden Library - TP805.M33 2016


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Stem cells: biology and engineering / Phuc Can Pham, editor

By library.mit.edu
Published On :: Sun, 20 Jan 2019 12:54:47 EST

Online Resource


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Biometrics under Biomedical Considerations Amine Nait-Ali, editor

By library.mit.edu
Published On :: Sun, 20 Jan 2019 12:54:47 EST

Online Resource


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Hyperbolic and kinetic models for self-organised biological aggregations: a modelling and pattern formation approach / Raluca Eftimie

By library.mit.edu
Published On :: Sun, 17 Feb 2019 13:12:16 EST

Online Resource


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Cell biology and translational medicine. edited by Kursad Turksen

By library.mit.edu
Published On :: Sun, 17 Feb 2019 13:12:16 EST

Online Resource


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Genome editing and engineering: from TALENs, ZFNs and CRISPRs to molecular surgery / edited by Krishnarao Appasani, with a foreword by George M. Church

By library.mit.edu
Published On :: Sun, 10 Mar 2019 13:08:57 EDT

Hayden Library - QH440.G46 2018


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Perinatal stem cells: biology, manufacturing and translational medicine / Zhong Chao Han, Tsuneo A. Takahashi, Zhibo Han, Zongjin Li, editors

By library.mit.edu
Published On :: Sun, 14 Apr 2019 07:26:57 EDT

Online Resource


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Chasing Captain America: how advances in science, engineering, and biotechnology will produce a superhuman / E. Paul Zehr ; foreword by Simon Whitfield ; afterword by Nicole Stott

By library.mit.edu
Published On :: Sun, 5 May 2019 07:22:22 EDT

Hayden Library - QH442.Z44 2018


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