The anilination of o-halogenobenzaldehyde 9 with alkylamino-acid 16 gave o-formylaniline-acid 17. Compound 17 was esterified followed by the improved reaction using the combination of alcoholate and dialkyl carbonate in one-pot, to easily produce 19. Namely, these new processes afforded the desired product 19 in only twostepsfrom the starting materials, as compared with the previous 10 steps. Moreover
Benzazepine derivatives, process for the preparation of the same and uses thereof
申请人:Shiraishi Mitsuru
公开号:US06936602B1
公开(公告)日:2005-08-30
Compounds of the general formula (I):
or salts thereof, which exhibit CCR5 antagonism and exert preventive and therapeutic effects against HIV infections: wherein R
1
is a 5- to 6-membered aromatic ring which bears a substituent represented by the general formula: R-Z
1
-X-Z
2
- (wherein R
1
is hydrogen or optionally substituted hydrocarbyl; X is optionally substituted alkylene; and Z
1
and Z
2
are each a heteroatom) and may be further substituted, with R being optionally bonded to the aromatic ring to form another ring; Y is optionally substituted imino; and R
2
and R
3
are each optionally substituted aliphatic hydrocarbyl or an optionally Substituted hetero-alicyclic group.
PROCESS FOR THE PREPARATION OF 2,3-DIHYDROAZEPINE COMPOUNDS
申请人:Takeda Chemical Industries, Ltd.
公开号:EP1211239A1
公开(公告)日:2002-06-05
As a process for preparing 2,3-dihydroazepine compounds at low cost in a simple and easy manner, there is provided a process for the preparation of compounds of the formula:
or salts thereof, characterized in that compounds of the formula:
or salts thereof are reacted with compounds of the formula:
or salts thereof to give compounds of the formula:
or salts thereof, which are then subjected to esterification and ring-closing reaction.