Enantiospecific Synthesis of N-(9-Phenylfluoren-9-yl)-α-amino Ketones
摘要:
Enantiomerically pure N-(9-phenylfluoren-9-yl)-alpha-amino ketones were prepared in excellent yields by acylation of organolithium reagents with N-(9-phenylfluoren-9-yl)-alpha-amino acid-derived oxazolidinones. The method is not applicable for the acylation of Grignard reagents as they attack the methylenic carbon of the oxazolidinone to give the corresponding N-alkylated amino acids 13 in excellent yields. The resulting N-(9-phenylfluoren-9-yl)-alpha-amino ketones 8 could be stereoselectively reduced to the corresponding syn- or anti-beta-amino alcohols depending upon the nature of the reducing agent.
N-trityl and N-phenylfluorenyl carboxyanhydrides of amino acids
申请人:The Regents of the University of California
公开号:US06093831A1
公开(公告)日:2000-07-25
Amino acids are derivatized for use in peptide synthesis by conversion to N-carboxyanhydrides that are N-proected by either a trityl or a phenylfluorenyl group.
氨基酸通过转化为N-羧酸酐,并由三苯甲基或苯基芴基保护的方式用于肽合成。
N-TRITYL AND N-PHENYLFLUORENYL CARBOXYANHYDRIDES OF AMINO ACIDS
申请人:The Regents of the University of California
公开号:EP1169299A1
公开(公告)日:2002-01-09
US6093831A
申请人:——
公开号:US6093831A
公开(公告)日:2000-07-25
US6166229A
申请人:——
公开号:US6166229A
公开(公告)日:2000-12-26
[EN] N-TRITYL AND N-PHENYLFLUORENYL CARBOXYANHYDRIDES OF AMINO ACIDS<br/>[FR] N-TRITYL ET N-PHENYLFLUORENYLE CARBOXYANHYDRIDES D'ACIDES AMINES
申请人:UNIV CALIFORNIA
公开号:WO2000050383A1
公开(公告)日:2000-08-31
Amino acids are derivatized for use in peptide synthesis by conversion to N-carboxyanhydrides that are N-protected by either a trityl or a phenylfluorenyl group.