Application of allylic amine formation from aziridine-2-ol under Appel reaction condition: Synthesis of N-(tert-butoxycarbonyl)-D-vinyl glycine methyl ester
作者:Subhash P. Chavan、Sanket A. Kawale、Niteen B. Patil、Dinesh B. Kalbhor
DOI:10.1016/j.tetlet.2021.153119
日期:2021.6
PPh3/I2/imidazolde mediated allyl amine formation from aziridine-2-alcohol was explored for the synthesis of N-(tert-butoxycarbonyl)-D-vinyl glycine methyl ester.
Enantioselective syntheses of (R)-pipecolic acid, (2R,3R)-3-hydroxypipecolic acid, β-(+)-conhydrine and (−)-swainsonine using an aziridine derived common chiral synthon
作者:Subhash P. Chavan、Lalit B. Khairnar、Kailash P. Pawar、Prakash N. Chavan、Sanket A. Kawale
DOI:10.1039/c5ra06429e
日期:——
Concisetotal syntheses of (R)-pipecolic acid, (R)-ethyl-6-oxopipecolate, (2R,3R)-3-hydroxypipecolicacid and formal syntheses of β-(+)-conhydrine, (−)-lentiginosine, (−)-swainsonine and 1,2-di-epi-swainsonine have been accomplished starting from a common chiral synthon. The present strategy employs regioselective aziridine ring opening, Wittig olefination and RCM as the key chemical transformations
简明的(R)-哌酸,(R)-乙基-6-氧代哌酸酯,(2 R,3 R)-3-羟基哌酸的总合成以及β-(+)-羟基,(-)-龙胆苷的形式合成,(-)-swainsonine和1,2- di - epi -swainsonine已从常见的手性合成子开始完成。本策略采用区域选择性氮丙啶开环,维蒂希烯化和RCM作为关键化学转化。
<i>cis</i>
‐Aziridine Synthon Based Synthetic Investigation for Tamiflu Employing Horner‐Wadsworth‐Emmons Reaction
作者:Subhash P. Chavan、Sanket A. Kawale、Rajesh G. Gonnade
DOI:10.1002/ejoc.202200384
日期:2022.7.7
Synthetic investigations to achieve the six-membered core skeleton of Tamiflu using cis-aziridine as a chiralsynthon has been presented. Present approach successfully utilizes intramolecular Horner-Wadsworth-Emmons reaction as the key step for the synthesis, whereas diene containing allylic aziridine framework is found to be inefficient to furnish six-membered core skeleton of Tamiflu through ring-closing
Chiron approach to formal synthesis of both antipodes of cis 3-hydroxypipecolic acid
作者:Subhash P. Chavan、Lalit B. Khairnar、Prakash N. Chavan、Nilesh B. Dumare、Dinesh B. Kalbhor、Rajesh G. Gonnade
DOI:10.1016/j.tetlet.2014.09.118
日期:2014.11
The efficient and practical formal syntheses of both enantiomers of cis 3-hydroxypipecolic acid were accomplished from cis aziridine-2-carboxylate as the common synthetic precursor. The key steps involved are stereo and regioselective aziridine ring opening, reductive cyclization and selective N-debenzylation over O-debenzylation reactions. (C) 2014 Elsevier Ltd. All rights reserved.