A Rapid Approach to Amino-Acid Derivatives by [2,3]-Stevens Rearrangement
作者:Amélie P. A. Arboré、Daniel J. Cane-Honeysett、Iain Coldham、Mark L. Middleton
DOI:10.1055/s-2000-6494
日期:2000.2
Allylation of amino-acid esters gives rise to intermediate quaternary ammonium salts, which undergo proton abstraction to give ylides and [2,3]-sigmatropic rearrangement. The resulting α-amino-acid derivatives can be subjected to N-deallylation to provide a rapid access to α-allyl-α-amino-esters. Using N-benzyl proline methyl ester, chirality transfer from carbon to nitrogen then back to carbon takes place.
The present invention is directed to compounds of Formula I:
and Formula II:
(where variables R1, R2, R3, R4, A, B, G, J, Q, T, U, V, W, X and Y are as defined herein) useful as antagonists of CGRP receptors and useful in the treatment or prevention of diseases in which the CGRP is involved, such as headache, migraine and cluster headache. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which CGRP is involved.
本发明涉及式 I 的化合物:
和式 II 的化合物:
(其中变量R1、R2、R3、R4、A、B、G、J、Q、T、U、V、W、X和Y如本文所定义)可作为CGRP受体的拮抗剂,并可用于治疗或预防CGRP参与的疾病,如头痛、偏头痛和丛集性头痛。本发明还涉及包含这些化合物的药物组合物,以及这些化合物和组合物在预防或治疗涉及 CGRP 的此类疾病中的用途。
Beta-lactamase inhibitor compounds
申请人:Entasis Therapeutics Limited
公开号:US10800778B2
公开(公告)日:2020-10-13
The present invention is directed to compounds which are beta-lactamase inhibitors. The compounds and their pharmaceutically acceptable salts are useful in combination with beta-lactam antibiotics, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to Formula (I): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3, R4, R5 and R6 are described herein.
Réactivité d'organozinciques α-insaturés vis à vis de N-(phénylsulfanyl) iminoesters application à la synthèse d' α-aminoacides insaturés, mono- ou disubstitués
作者:M. Aidene、F. Barbot、L. Miginiac
DOI:10.1016/s0022-328x(96)06854-4
日期:1997.4
A new general synthesis of C-subtituted alpha-aminoacids is described, using at first the regioselective reaction between alpha-unsaturated organozincs and N-(phenylsulfanyl)iminoesters.
GENET, J. -P.;JUGE, S.;ACHI, S.;MONTES, J. RUIZ;LEVIT, G., TETRAHEDRON, 44,(1988) N 17, C. 5263-5275
作者:GENET, J. -P.、JUGE, S.、ACHI, S.、MONTES, J. RUIZ、LEVIT, G.