A compound of the formula
in which R¹ and R² taken together represent a polymethylene chain having 3 or 4 carbon atoms, or a polymethylene chain having 3 or 4 carbon atoms substituted by at least one lower alkyl radical having 1 to 4 carbon atoms, R³ is hydrogen, hydrocarbyl or substituted hydrocarbyl and X represents cyano, a group -SO₃M or a group -S-R⁴ where M is hydrogen or an alkali metal such as sodium and R⁴ is hydrocarbyl or substituted hydrocarbyl. Typically R¹ and R² complete a cyclopentene ring, R³ is alkyl such as methyl and X is a group -SO₃Na. The compounds have microbiological activity.
式中的化合物
其中 R¹ 和 R² 共同代表具有 3 或 4 个碳原子的聚亚甲基链,或具有 3 或 4 个碳原子的聚亚甲基链被至少一个具有 1 至 4 个碳原子的低级烷基取代,R³ 是氢、烃基或取代的烃基,X 代表
氰基、基团 -SO₃M 或基团 -S-R⁴ 其中 M 是氢或碱
金属如
钠,R⁴ 是烃基或取代的烃基。通常 R¹ 和 R² 是一个完整的
环戊烯环,R³ 是烷基,如甲基,X 是基团 -SO₃Na。这些化合物具有微
生物活性。