A simple route to 5-alkyl-2-(aminomethyl)pyrroles is proposed that is based on hydrolytic ringopening of 5-alkylfurfurylamines followed by pyrrole ringclosure under Paal-Knorr conditions. furans-ringopening-ringclosure- pyrroles - polycycles
Pharmaceutical preparations for treatment of type II diabetes and methods for treatment of type II diabetes
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:US20040063780A1
公开(公告)日:2004-04-01
Pharmaceutical preparations for type II diabetes comprising as active ingredients thereof biguanide derivatives represented by the following general formula (1):
1
(where R
1
, R
2
and R
3
are the same or different and each represents one selected from the group consisting of hydrogen, optionally substituted lower alkyl groups and optionally substituted lower alkylthio groups), or their salts.