entry toward thienamycin and related compounds. The copper(I)-mediated reaction between five-membered cyclic nitrones and terminal acetylenes, leading to the assembly of the basic skeleton of carbapenemantibiotics is described. The diastereoselectivity of this cycloaddition–rearrangement cascade, a process known as the Kinugasa reaction, with respect to the structure and configuration of both substrates
METHOD FOR THE PREPARATION OF CARBAPENAM COMPOUNDS
申请人:Chmielewski Marek
公开号:US20140148595A1
公开(公告)日:2014-05-29
The subject of the present invention is a method of the preparation of compounds containing the core skeleton of carbapenem antibiotics, novel intermediate compounds used in this method, a method of the preparation of the intermediate compounds as well as the use of the intermediate compounds in the production of carbapenem antibiotics.
The allene–diyne natural product nemotin was synthesized for the first time through an enantioselective route with the stereogenic center at the lactone moiety derived from L-glutamic acid and the allene axis constructed from the corresponding propargylic tosylate, and the absolute configuration was thus established as (4S,5aS).