排序方式: 共有1条查询结果,搜索用时 31 毫秒
1
1.
Title compounds 2′,2′-dimethylcholesta-2,4-dien[3,2-b]-pyran-4′-one(3),2′,2′-dimethyl-3β-substituted cholesta-4,6-dien[7,6- b]-pyran-4′-one(6a,b)and(6c)were prepared by the cyclization of 2-acetylcholesta-2,4-dien-3-ol(2),6-acetyl-3β-substituted- cholesta-4,6-dien-7-ol(5a,b)and(5c)respectively,with pyrrolidine,dry benzene and dry acetone using Dean Stark separator through conventional heating.Furthermore,compounds were also found to be active against Mycobacterium tuberculosis. 相似文献
1