[EN] INTERMEDIATES IN THE PREPARATION OF THERAPEUTIC FUSED BICYCLIC AMINO ACIDS [FR] INTERMEDIAIRES UTILISES DANS LA PREPARATION D'ACIDES AMINES BICYCLIQUES FUSIONNES A ACTION THERAPEUTIQUE
Enzymatic Process for the Synthesis of <i>cis/</i><i>trans</i>-(1<i>R</i>,5<i>R</i>)-Bicyclo[3.2.0]hept- 6-ylidene-acetate: Solvent Effect and NMR Study
作者:Daniel Yazbeck、Andrew Derrick、Maninder Panesar、Alan Deese、Anita Gujral、Junhua Tao
DOI:10.1021/op0600409
日期:2006.5.1
An efficient enzymatic process has been developed to resolve a diastereomeric mixture of racemic ethyl bicyclo[3.2.0]hept-6-ylidene-acetate (1). Using 40% acetone, not only was the enantioselectivity of Candida antarctica lipase B (CAL-B) significantly improved to E > 200 from E = 2.7, remarkably the enzyme is able to maintain low diastereoselectivity for the Z (cis)- and E (trans)-isomers leading
Intermediates in the preparation of therapeutic fused bicyclic amino acids
申请人:——
公开号:US20040138498A1
公开(公告)日:2004-07-15
The invention presents compounds of formula (I),
1
where R represents H or a suitable carboxylic acid protecting group, which are intermediates in the preparation of therapeutic fused bicyclic amino acids.
Synthesis and in vivo evaluation of bicyclic gababutins
作者:David C. Blakemore、Justin S. Bryans、Pauline Carnell、Christopher L. Carr、Nicola E.A. Chessum、Mark J. Field、Natasha Kinsella、Simon A. Osborne、Andrew N. Warren、Sophie C. Williams
DOI:10.1016/j.bmcl.2009.11.118
日期:2010.1
Synthesis of a number of bicyclic five-membered ring derivatives of gabapentin led to the identification of two compounds, (-)-(11A) and (20A) which both had an excellent level of potency against alpha(2)delta and were pro. led in an in vivo model of neuropathic pain. (C) 2009 Elsevier Ltd. All rights reserved.
The invention provides salts of formula (I) wherein X is a basic counterion selected from a group I or group II metal and a primary, secondary or tertiary amine; n is 0, 1 or 2; and Rl, Rla, R2, R2a, R3, R3a, R4 and R4a are independently selected from H and C1-C6 alkyl, or R1 and R2 or R2 and R3 are taken together to form a C3-C7 cycloalkyl ring, which is optionally substituted with one or two substituents selected from C1-C6 alkyl, which are useful as intermediates in the preparation of cyclic and bicyclic amino acids. Processes for the preparation of the final products and for the conversion of the compounds of formula (Ι) to amino acids are included.
[EN] INTERMEDIATES IN THE PREPARATION OF THERAPEUTIC FUSED BICYCLIC AMINO ACIDS<br/>[FR] INTERMEDIAIRES UTILISES DANS LA PREPARATION D'ACIDES AMINES BICYCLIQUES FUSIONNES A ACTION THERAPEUTIQUE
申请人:PFIZER LTD
公开号:WO2004031115A1
公开(公告)日:2004-04-15
The invention presents compounds of formula (I), where R represents H or a suitable carboxylic acid protecting group, which are intermediates in the preparation of therapeutic fused bicyclic amino acids.