A number of amino acid derivatives of DL-Zra/w-epoxysuccinic acid, with a general formula of R1O-ES-AA-OR2 (ES, DL-trans-epoxysuccinyl group; AA, amino acid residue) were newly synthesized and used for the study of structure-activity relationships of papain inhibition. Branched-alkyl amino acids, such as Leu, He and Val, as AA and hydrogen or an alkyl group substituted with a phenyl or cycloalkyl group as R1 were desirable for activity, respectively. However, R2 or the optical activities of ES and AA not so much influenced on the activity.
A chiralaldehyde is rationally combined with a Lewis acid and a transition metal for the first time to form a triple catalytic system. This cocatalytic system exhibits good catalytic activation and stereoselective-control abilities in the asymmetric α-allylation reaction of N-unprotected amino acid esters and allyl acetates. Optically active α,α-disubstituted α-amino acids (α-AAs) are generated in
Fettsäurehaltige basische Peptide mit antibakterieller Wirkung
作者:K. Vogler、P. Lanz、P. Quitt、R. O. Studer、W. Lergier、E. Böhni、B. Fust
DOI:10.1002/hlca.19640470220
日期:——
The synthesis of a new class of surface active agents consisting of basic peptides containing on one amino group a large aliphatic acyl residue is outlined. There are some definite relations between constitution and antibacterial properties. The structural conditions for maximum activity are:
Compounds of the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein R.sup.1, R.sup.2 and R.sup.4 are independently selected from hydrogen and lower alkyl; R.sup.3 is hydrogen, lower alkyl or amino lower alkyl; A and B taken together with the carbons to which they are attached form an alkylene ring having six carbon atoms or A and B are hydrogen; and Z is ##STR2## are disclosed. The compounds are useful as anti-hypertensive agents.
Carboxyalkyl dipeptides, processes for their production and pharmaceutical compositions containing them
申请人:SCHERING CORPORATION
公开号:EP0088350A1
公开(公告)日:1983-09-14
The compounds of the present invention are compounds of the formula
and the pharmaceutically acceptable esters and salts thereof wherein R' and R2 independently are hydrogen or lower alkyl; the group
is one of the structures II to VIII specified in the description, one of R3, R4 and R5 is a group Z-(CH2)0-6-' wherein Z is selected from Z' to Z10 being as defined in the description and the other of the groups R3, R4 and R5 are as also defined. The compounds are useful as antihypertensive agents, in the treatment of congestive heart failure and glaucoma. Their preparation and pharmaceutical compositions are disclosed.
本发明的化合物是如下式的化合物
及其药学上可接受的酯和盐 其中 R' 和 R2 分别为氢或低级烷基;基团
是描述中规定的结构 II 至 VIII 之一,R3、R4 和 R5 中的一个是基团 Z-(CH2)0-6-',其中 Z 选自描述中定义的 Z' 至 Z10,基团 R3、R4 和 R5 中的另一个也如定义。这些化合物可用作降压药、治疗充血性心力衰竭和青光眼。已公开了它们的制备方法和药物组合物。