Novel compounds of formula ##STR1## wherein R.sup.1 represents a lower alkenyl group or R.sup.11, or taken together with R.sup.4 an oxo group; R.sup.11 represents hydrogen or a lower alkyl group; R.sup.2 represents hydrogen or a lower alkyl group; R.sup.3 represents methyl or methylene; R.sup.4 represents hydroxy or a loweralkoxy, lower alkenyloxy, loweralkoxyloweralkyl or acyloxy group and R.sup.5 represents hydrogen or, when simultaneously R.sup.3 represents methyl and R.sup.1 represents R.sup.11, taken together with R.sup.4 a 3.alpha.,6-epoxide group, and 1,8a-dihydro-derivatives of compounds of formula I wherein R.sup.3 represents methyl and R.sup.5 represents hydrogen. The use of said compounds as odorants and also processes for their preparation are disclosed.
化合物的新颖配方式为##STR1## 其中 R.sup.1 代表较低的烯基基团或 R.sup.11,或与 R.sup.4 一起代表氧代基;R.sup.11 代表氢或较低的烷基基团;R.sup.2 代表氢或较低的烷基基团;R.sup.3 代表甲基或亚甲基;R.sup.4 代表羟基或较低的烷氧基,较低的烯氧基,较低的烷氧基较低的烷基或酰氧基基团;R.sup.5 代表氢或当同时 R.sup.3 代表甲基且 R.sup.1 代表 R.sup.11 时,与 R.sup.4 一起代表 3.alpha.,6-环氧基团,以及化合物的 1,8a-二氢衍
生物。其中 R.sup.3 代表甲基,R.sup.5 代表氢。本文还公开了所述化合物作为气味剂的用途以及它们的制备方法。