FUSED RING SPIROKETAL DERIVATIVE AND USE THEREOF AS ANTI-DIABETIC DRUG
申请人:Sato Tsutomu
公开号:US20100234609A1
公开(公告)日:2010-09-16
Provided are a compound represented by Formula (I):
wherein R
1
, R
2
, R
3
, and R
4
are each independently selected from a hydrogen atom, a C
1-6
alkyl group which may be substituted, a C
7-14
aralkyl group which may be substituted and —C(═O)Rx; n denotes an integer selected from 1 and 2; and ring Ar is selected from the groups represented by the following Formula (a) to (f).
or a prodrug thereof or a pharmaceutically acceptable salt thereof as well as a pharmaceutical agent and a pharmaceutical composition containing such a compound or a prodrug thereof, or a pharmaceutically acceptable salt thereof.
FUSED RING SPIROKETAL DERIVATIVE AND USE THEREOF AS DRUG FOR TREATING DIABETES
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP2048152A1
公开(公告)日:2009-04-15
Provided are a compound represented by Formula (I):
wherein R1, R2, R3, and R4 are each independently selected from a hydrogen atom, a C1-6 alkyl group which may be substituted, a C7-14 aralkyl group which may be substituted and -C(=O)Rx; n denotes an integer selected from 1 and 2; and ring Ar is selected from the groups represented by the following Formula (a) to (f).
, or a prodrug thereof or a pharmaceutically acceptable salt thereof as well as a pharmaceutical agent and a pharmaceutical composition containing such a compound or a prodrug thereof, or a pharmaceutically acceptable salt thereof.
Electrochemical reduction of amides was achieved by using a hydrosilane without any toxic or expensive metals. The key reactive ketyl radical intermediate was generated by cathodic reduction. Continuous reaction with anodically generated silyl radicals or zinc bromide resulted in chemoselective deoxygenation to give the corresponding amines.