Reduction of Carbon−Carbon Double Bonds Using Organocatalytically Generated Diimide
作者:Christian Smit、Marco W. Fraaije、Adriaan J. Minnaard
DOI:10.1021/jo801588d
日期:2008.12.5
An efficient method has been developed for the reduction of carbon-carbondoublebonds with diimide, catalytically generated in situ from hydrazine hydrate. The employed catalyst is prepared in one step from riboflavin (vitamin B(2)). Reactions are carried out in air and are a valuable alternative when metal-catalyzed hydrogenations are problematic.
Boron-Based Dipolar Multicomponent Reactions: Simple Generation of Substituted Aziridines, Oxazolidines and Pyrrolidines
作者:Nicola Kielland、Federica Catti、Davide Bello、Nicolas Isambert、Ignacio Soteras、F. Javier Luque、Rodolfo Lavilla
DOI:10.1002/chem.201000349
日期:——
been developed as an efficient route to diverse scaffolds, including aziridines, oxazolidines and poly‐substituted pyrrolidines. This chemistry, inspired by a report by Hesse in 1965, is simple and involves mild conditions. Computational studies provide a basis to investigate the stereochemical features observed in the formation of oxazolidines and four‐component adducts, and permit identification of
Discovery of selective indole-based prostaglandin D2 receptor antagonist
作者:Maki Iwahashi、Atsushi Shimabukuro、Takahiro Onoda、Yoko Matsunaga、Yutaka Okada、Ryoji Matsumoto、Fumio Nambu、Hisao Nakai、Masaaki Toda
DOI:10.1016/j.bmc.2011.06.014
日期:2011.8
A series of N-benzoyl-2-methylindole-3-acetic acids were synthesized and biologically evaluated as prostaglandin (PG) D-2 receptor antagonists. Some of the selected compounds significantly inhibited OVA-induced vascular permeability in guinea pig conjunctiva after oral dosing. Structure-activity relationship study is presented. (C) 2011 Elsevier Ltd. All rights reserved.
Combinatorial synthesis of a triphenylmethine library and their application in the development of Surface Enhanced Raman Scattering (SERS) probes
作者:Sung Ju Cho、Young-Hoon Ahn、Kaustabh Kumar Maiti、U. S. Dinish、Chit Yaw Fu、Praveen Thoniyot、Malini Olivo、Young-Tae Chang
DOI:10.1039/b921550f
日期:——
a triphenylmethine (TM) library of compounds and screening of their Surface Enhanced Raman Scattering (SERS) capability was carried out to identify novel Raman reporters with high sensitivity. We identified three novel SERS reporters (B2, B7, and C7) with higher signal intensity than that of commonly used crystal violet (CV). These reporters may find potential applications in developing sensitive SERS
Convenient Access to Bicyclic and Tricyclic Diazenes
作者:Douglass F. Taber、Pengfei Guo
DOI:10.1021/jo8017704
日期:2008.12.5
Heating the tosylhydrazone of an omega-alkenyl ketone or aldehyde to reflux in toluene in the presence of K(2)CO(3) delivered the bicyclic diazene. Irradiation of the diazene converted it to the cyclopropane. This appears to be a generally useful method for the construction of substituted cyclopentanes and cyclohexanes.