摘要:
A starting product for the preparation of COX-2 inhibitors, notably the compound 1-(6-methylpyridine-3-yl)-2-[(4-(methylsulfonyl)phenyl]ethanone of the formula (I): A method for making the compound.
摘要:
The invention relates to an improved process for the manufacture of substituted 2-cyanocinnamic esters. This novel economical process provides products in high purity and yields.
摘要:
The invention relates to an improved process for the manufacture of substitute 2-cyanocinnamic esters. This novel economical process provides products in high purity and yields.
摘要:
Novel purified extracts from Ligusticum species are obtained by submitting crude extracts from Ligusticum species, particularly from Ligusticum wallichii (chuanxiong) containing less than 50 wt.-% of ligustilide to rectification under specific conditions.
摘要:
A four-step process for preparing 1-(6-methylpyridin-3-yl)-2-[4-(methylsulfonyl)phenyl]ethanone of the formula: starting from 2-methyl-5-ethylpyridine. 1-(6-Methylpyridin-3yl)-2-[4-(methylsulfonyl)phenyl]ethanone is an intermediate for preparing inhibitors.
摘要:
The invention relates to an improved process for the manufacture of substitute 2-cyanocinnamic esters. This novel economical process provides products in high purity and yields.
摘要:
The invention relates to an improved process for the manufacture of substituted 2-cyanocinnamic esters. This novel economical process provides products in high purity and yields.
摘要:
A four-step process for preparing 1-(6-methylpyridin-3-yl)-2-[4-(methylsulfonyl)phenyl]ethanone of the formula: starting from 2-methyl-5-ethylpyridine. 1-(6-Methylpyridin-3yl)-2-[4-(methylsulfonyl)phenyl]ethanone is an intermediate for preparing inhibitors.