Immonium ion based synthetic methodology: a novel method for the N-methylation of dipeptides and amino acid derivatives via retro aza Diels-Alder reactions
Original proline or gamma-lactam derivatives bearing either an aryl group such as a phenyl or a 3-indolyl in position 3 of the proline moiety or on the 3-methyl chain of the gamma-lactam skeleton were prepared as nonpeptide mimics of Somatostatin/Sandostatin(R). (C) 1999 Elsevier Science Ltd. All rights reserved.
GRIECO, PAUL A.;BAHSAS, ALI, J. ORG. CHEM., 52,(1987) N 26, 5746-5749
作者:GRIECO, PAUL A.、BAHSAS, ALI
DOI:——
日期:——
Immonium ion based synthetic methodology: a novel method for the N-methylation of dipeptides and amino acid derivatives via retro aza Diels-Alder reactions
作者:Paul A. Grieco、Ali Bahsas
DOI:10.1021/jo00235a021
日期:1987.12
Thiohydantoin derivatives
申请人:John Wyeth & Brother
公开号:US03984430A1
公开(公告)日:1976-10-05
This invention relates to novel thiohydantoins having the formula: ##SPC1## Wherein R represents lower alkyl or a phenyl or phenyl lower alkyl radical in either of which the phenyl portion may be substituted by halogen, lower alkyl or lower alkoxy; A is oxygen or a direct bond; B represents lower alkylene, R.sup.1 represents hydrogen, or lower alkyl; and R.sup.2 represents lower alkyl or phenyl which may be substituted by halogen, lower alkyl or lower alkoxy, which possess anti-ulcer activity.