The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.
4-Substituted 2-Phenyl- and 2-Phenyl-3-Aryl Pyrroles by Reaction of Tosyl Benzyl Isocyanide (TosBIC) with Michael Acceptors
作者:R. Di Santo、R. Costi、S. Massa、M. Artico
DOI:10.1080/00397919508013415
日期:1995.3
Abstract Synthesis of 2-phenyl and 2,3-diphenylpyrroles bearing at the 4 position electronwithdrawing groups by reaction of tosylbenzylisocyanide (TosBIC) with various Michael acceptors was investigated. Sodiumhydride and n-butyllithium were used as deprotonating agents for the synthesis of monophenyl and diphenylpyrroles, respectively.
The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.
5-aryl-1H-pyrrole-3-carbonitrile and a pharmaceutical product using the same
申请人:Takeda Pharmaceutical Company Limited
公开号:US10173977B2
公开(公告)日:2019-01-08
The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.