Salt and Polymorph of Benzopyrimidinone Compound and Pharmaceutical Composition and Use Thereof
申请人:Shen Jingshan
公开号:US20200140415A1
公开(公告)日:2020-05-07
The present disclosure relates to a salt of phenyl pyrimidinone compound, a polymorph thereof and a pharmaceutical composition comprising the same and a use thereof, particularly relates to the hydrochlorate of phenyl pyrimidinone compound of following formula (I-A) and a pharmaceutically acceptable polymorph, solvate, hydrate, co-crystal, anhydrous substance, or amorphous form thereof, a pharmaceutical composition and a pharmaceutical unit dosage comprising the same, the preparing method and use thereof.
Regiocontrolled synthesis of 3-substituted-6-trifluoromethyl-4(3H)-pyrimidinones
作者:Colin M Tice、Lois M Bryman
DOI:10.1016/s0040-4020(01)00042-4
日期:2001.4
Direct reaction of a variety of N-monosubstituted benzamidines with 4,4,4-trifluoroacetoacetate esters substituted at the 2-position with methyl, ethyl or methoxy afforded moderate to good yields of herbicidal 3-substituted-6-trifluoromethyl-4(3H)-pyrimidinones. Lower yields were obtained with the corresponding 4,4-difluoroacetoacetate esters and the reaction failed with nonfluorinated β-ketoesters
quinazoline alkaloid isolated from Dichroa febrifuga roots, shows powerful antimalarial activity against Plasmodium falciparum. Although the use of ferifugine as an antimalarial drug has been precluded because of its severe side effects, its potent antimalarial activity has stimulated medicinal chemists to pursue its derivatives instead, which may provide valuable leads for novel antimalarial drugs. In
作者:Hong-Bo Wang、Bhanu P. Mudraboyina、Jiaxin Li、James A. Wisner
DOI:10.1039/c0cc02475a
日期:——
Molecular strands incorporating three hydrogen bond donor (D) or acceptor (A) heterocycles form highly stable double helical complexes through a complementary AAA–DDD array structure.
An improved synthesis of simmerafil, a potent PDE5 inhibitor as a clinical candidate, is described with a 38.1% overall yield and 99.7% purity. Starting from the safe and inexpensive salicylamide (15), the key intermediate 2-propoxybenzimidamide (21), which is also a potential precursor for the preparation of pyrimidinone derivatives, was effectively and conveniently obtained. The subsequent process