作者:Jeffery B. Press、Gary H. Birnberg
DOI:10.1002/jhet.5570220270
日期:1985.3
A series of A-ring heterocyclic analogues of tetrahydrocannabinol were investigated. Chromanones 1a and 1b were functionalized by formylation with base and ethyl formate to give 6a and 6b. These formylketones were reacted with hydrazine, and Phenylhydrazine to give pyrazoles 7a,b,e, and f, respectively. When 6a and 6b were reacted wtih methylhydrazine, mixtures of methyl isomers 7c and 8a and 7d and
研究了四氢大麻酚的一系列A环杂环类似物。二氢吡喃1A和1B通过用碱和甲酸乙酯,得到甲酰化官能化图6a和6b中。这些甲酰基酮与肼和苯肼反应,分别得到吡唑7a,b,e和f。当6a和6b与甲基肼反应时,甲基异构体7c和8a以及7d和8b的混合物以1∶2.5的比例形成。异恶唑10a和10b当使用羟胺作为缩合剂时,类似地形成。尝试制备嘧啶衍生物11通过的重排挫败图6a和6b中,以chromenones 12A和12b中。