Asymmetric Synthesis of 3-Substituted Cyclohexylamine Derivatives from Prochiral Diketones<i>via</i>Three Biocatalytic Steps
作者:Elina Siirola、Francesco G. Mutti、Barbara Grischek、Sebastian F. Hoefler、Walter M. F. Fabian、Gideon Grogan、Wolfgang Kroutil
DOI:10.1002/adsc.201201057
日期:2013.6.17
Prochiral bicyclic diketones were transformed to a single diastereomer of 3‐substituted cyclohexylaminederivatives via three consecutive biocatalyticsteps. The two chiral centres were set up by a CC hydrolase (6‐oxocamphor hydrolase) in the first step and by an ω‐transaminase in the last step. The esterification of the intermediate keto acid was catalysed by a lipase in the second step if possible
Prasad; Adapa, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 3, p. 347 - 348
作者:Prasad、Adapa
DOI:——
日期:——
Highly Efficient 1,4-Addition of 1,3-Diesters to Conjugated Enones by In/TMSCl
作者:Phil Ho Lee、Dong Seomoon、Kooyeon Lee、Yunkiu Heo
DOI:10.1021/jo026600t
日期:2003.3.1
Organoindium reagents derived from indium and diethyl bromomalonates were added to a wide range of conjugated enones in a 1,4-fashion in the presence of TMSCl under mild conditions, and corresponding oxo-1,3-diesters were obtained in good to excellent yields.
Facile Synthesis of Spirocyclic Lactams from β-Keto Carboxylic Acids
作者:Wei Yang、Xianyu Sun、Wenbo Yu、Rachita Rai、Jeffrey R. Deschamps、Lauren A. Mitchell、Chao Jiang、Alexander D. MacKerell、Fengtian Xue
DOI:10.1021/acs.orglett.5b01350
日期:2015.6.19
A facile synthesis of spirocyclic lactams starting from β-keto carboxylic acids via a one-pot cascade reaction involving a Curtius rearrangement and an intramolecular nucleophilic addition of the enol carbon to the isocyanate intermediate is reported. The same conditions have also been used for the generation of fused cyclic lactams with similar good yields. The synthetic value of this method has been