Direct, Microwave-Assisted Synthesis of Isothiocyanates
作者:Łukasz Janczewski、Anna Gajda、Tadeusz Gajda
DOI:10.1002/ejoc.201900105
日期:2019.4.16
Application of microwave technique allowed to accomplish novel, general and “greener” one‐pot protocol for the synthesis of isothiocyanates from amines. Reactions are easily scalable and take place without racemization of chiral amines. Decomposition of the intermediate dithiocarbamates into isothiocyanates proceeds without any additional desulfurating agent under these conditions.
Design and Synthesis of Novel C2-symmetric bis-cinchona Alkaloid Derivatives
作者:MingKun Qin、MingXiang Gao、JiangTao Li、ZhiYong Jiang、Lin Yan
DOI:10.2174/1570178613666160815094631
日期:2016.9.21
Background: The commercially available dimeric cinchona alkaloids based on C-9 ether
bond connecting are limited by the absence of Brønsted acid moiety and cannot meet the enantioselectivity
demand.
Objective: In this study, a family of novel C2-symmetric bis-cinchona alkaloid derivatives possessing a
range of mono- and bidentate hydrogen bond donor groups at the C-9 is now reported.
Method: These novel C2-symmetric bis-cinchona alkaloid derivatives were synthesized by a facile
route.
Results: These novel C2-symmetric bis-cinchona alkaloid derivatives exhibit a rare example of Brønsted
acid moiety of C-9, basic tertiary amine moiety, and a rigid enzyme-like pocket, suggesting their potential,
broadly useful bifunctional organic catalysts for asymmetric synthesis.
Diisothiocyanate derivatives as potent, insurmountable antagonists of P2Y6 nucleotide receptors
作者:Liaman K Mamedova、Bhalchandra V Joshi、Zhan-Guo Gao、Ivar von Kügelgen、Kenneth A Jacobson
DOI:10.1016/j.bcp.2004.01.011
日期:2004.5
cardiovascular, immune and digestive functions based on the receptor tissue distribution, and selective antagonists for this receptor are lacking. We have synthesized a series of symmetric aryl diisothiocyanate derivatives and examined their ability to inhibit phospholipase C (PLC) activity induced by activation of five subtypes of recombinant P2Y receptors. Several derivatives were more potent at inhibiting