Syntheses of cyclotetradepsipeptides, AM-toxin III and two analogs, were achieved, in which the Hofmanndegradation method was used in order to derive a dehydroalanine residue from a 2,3-diaminopropionic acid residue in cyclodepsipeptide precursors.
The structural bases of these stereo-preferences were explored by reference to the crystal structure of the enzyme by molecular modeling studies. The aminomethyl compound was unreactive with the DD-peptidases, whereas the carboxy compound did not react with any of the above-mentioned enzymes. The inhibitory effects of the -OMe and -CH(2)OH substituents in beta-lactams apparently require a combination
1,5-Benzodiazepine derivatives represented by formula (I), salts thereof, and medicines containing the same as the active ingredient:
The compounds exhibit excellent gastrin and/or CCK-B receptor antagonism and are useful as remedies for gastric ulcer and gastrointestinal movement disorder.
METHOD FOR MANUFACTURING 1,5-BENZODIAZEPINE DERIVATIVE
申请人:Terauchi Masaru
公开号:US20120010401A1
公开(公告)日:2012-01-12
An industrially advantageous method for producing a 1,5-benzodiazepine compound is provided.
A compound (5) is obtained according to the reaction scheme shown below, and this compound is used as an intermediate.
This invention relates to 1,5-benzodiazepine derivatives, which are each represented by the following formula (1):
wherein R1 represents a lower alkyl group, R2 and R3 may be the same or different and represent a hydrogen atom or a lower alkyl group, R4 represents a cyclohexyl group or phenyl group, and n stands for an integer of from 1 to 3, and also to medicines containing the same. These compounds are useful as curatives or preventives for diseases in which a gastrin receptor and/or a CCK-B receptor takes part.