Antineoplastic Agents. 561. Total Synthesis of Respirantin<sup>1a</sup>
作者:George R. Pettit、Thomas H. Smith、Song Feng、John C. Knight、Rui Tan、Robin K. Pettit、Peter A. Hinrichs
DOI:10.1021/np0680735
日期:2007.7.1
Totalsynthesis of the 18-membered ring cyclodepsipeptide believed to be respirantin (1b) has been achieved. The key step in the synthesis is an intramolecular transesterification of the beta-ketoester alcohol 6 to afford the protected macrocycle 5. The synthetic product was shown to be identical to a natural product presumed to be respirantin (1b), and the absolute stereochemistry of six of the seven
Process for the production of (S)-vinyl and allenyl gaba
申请人:Merrell Dow Pharmaceuticals Inc.
公开号:US05208345A1
公开(公告)日:1993-05-04
The present invention is directed to a new class of pyrrolidinone derivatives that are useful as chemical intermediates in the synthesis of S-allenyl and S-vinyl GABA, both of which are antiepileptic agents.