Preparation of Campholenal Analogues: Chirons for the lipophilic moiety of sandalwood-like odorant alcohols
作者:Christian Chapuis、Robert Brauchli
DOI:10.1002/hlca.19920750507
日期:1992.8.13
In connection with structure-activity relationship studies, analogues of campholenal ((+)-4b), an important building block for sandalwood-like odorants, were prepared. The five-membered-ring analogues 4 were obtained by epoxidation of the corresponding α-pinene derivatives 2, followed by catalytic ZnBr2 isomerisation (Scheme 2). The six-membered-ring skeleton was obtained by ozonolysis of α-campholenyl
结合结构-活性关系研究,制备了樟脑类似物((+)- 4b),它是檀香状增香剂的重要组成部分。通过将相应的α- by烯衍生物2环氧化,然后进行催化的ZnBr 2异构化(流程2),获得五元环类似物4。通过臭氧分解α-樟脑烯基乙酸酯((-)- 14b),然后进行分子内羟醛缩合,获得六元环骨架(方案5)。给出13 C-NMR分配。