作者:Hai-Wei Xu、Jun-Feng Wang、Gai-Zhi Liu、Guang-Feng Hong、Hong-Min Liu
DOI:10.1039/b701051f
日期:——
In this paper, a novel route to γ-alkylidenebutenolides (γ-AIBs) by way of stereoselective vinylogous aldol reaction of the unactivated butenolide in simple and general conditions is reported.
Prodrug derivatives of acids using alcohols with homotopic hydroxy groups and methods for their preparation and use
申请人:deLong A. Mitchell
公开号:US20070254920A1
公开(公告)日:2007-11-01
This invention relates to novel homotopic prodrugs and medicaments and methods for their preparation, testing and use. In one embodiment, the homotopic prodrug has the general formula
wherein
is a biologically-active moiety comprising a carboxylic acid functional group, and R
b
is a homotopically-symmetrical alcohol bonded to the biologically-active moiety through the carboxylic acid functional group to form an ester linkage, as well as optical isomers, enantiomers, pharmaceutically acceptable salts, biohydrolyzable amides, esters, and imides thereof and combinations thereof.
这项发明涉及新型同位素前药、药物以及其制备、测试和使用方法。在一个实施例中,同位素前药具有一般公式
其中
是包含羧酸官能团的生物活性基团,而 R
b
是通过羧酸官能团与生物活性基团形成酯键的同位对称醇,以及其光学异构体、对映异构体、药用可接受盐、生物水解酰胺、酯、亚酰胺及其组合物。
Aerobic oxidation of isosorbide and isomannide employing TEMPO/laccase
作者:Johannes Gross、Katharina Tauber、Michael Fuchs、Nina G. Schmidt、Aashrita Rajagopalan、Kurt Faber、Walter M. F. Fabian、Jan Pfeffer、Thomas Haas、Wolfgang Kroutil
DOI:10.1039/c3gc41855c
日期:——
The oxidation of the renewable diols isosorbide and isomannide was successfully achieved using a TEMPO/laccase system. Furthermore, various TEMPO-derivatives were tested leading to conversions of up to >99% for the oxidation of isosorbide, isomannide, indanol and a halohydrin to the corresponding ketone.
Asymmetric Synthesis and Antitumor Activity of Spiro-Oxadiazole Derivatives from 1,4:3,6-Dianhydro-<i>D</i>
-fructose
作者:Wenke Xu、Yongxun Ge、Yu Hou、Yingju Liu、Yingchun Hua、Weiwei Han、Zhiyan Qin、Fengwu Liu
DOI:10.1002/cjoc.201700058
日期:2017.9
A series of spiro‐oxadiazoles were synthesized from 1,4:3,6‐dianhydro‐D‐fructose and hydrazides via a stereo‐ selective two‐step reaction sequence. The structures of newly synthesized compounds were established by spectral analysis. The absolute configuration of compound 2a was further confirmed by single crystal X‐ray analysis. All the synthesized compounds were screened for their in vitro antitumor