[EN] PYRROLOPYRIDAZINE DERIVATIVES<br/>[FR] DERIVES DE PYRROLOPYRIDAZINE
申请人:FUJISAWA PHARMACEUTICAL CO
公开号:WO2004063197A1
公开(公告)日:2004-07-29
The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-α mediated diseases.
The invention relates to compound of the formula (I) or its salt, in which R
1
, R
2
, R
3
and R
4
are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-α mediated diseases.
Facile, green, and functional group-tolerant reductions of carboxylic acids…in, or with, water
作者:Karthik S. Iyer、Chandler Nelson、Bruce H. Lipshutz
DOI:10.1039/d3gc00517h
日期:——
Facilereductions of carboxylic acids to aldehydes or alcohols can be effected under mild conditions upon initial conversion to their corresponding S-2-pyridyl thioesters. Upon treatment with a commercially available and air-stable nickel pre-catalyst and silane as a stoichiometric reductant, aldehydes are formed in moderate to good yields. Alternatively, the 1-pot conversion of acids to their thioester