Synthetic Studies on the Ochtodane Type Terpenes I. Stereoselective Construction of the Ochtodane Skeleton from Myrcene
作者:Yukio Masaki、Kinji Hashimoto、Kazuhiko Sakuma、Kenji Kaji
DOI:10.1246/bcsj.57.3466
日期:1984.12
cyclization reaction was found to depend remarkably upon the reaction temperature and the 85–94% of E-stereoselectivity was attained at −78 °C. By the method, the ochtodane derivatives with the sulfur- or oxygen-functional groups on the C(6)-position were obtained. Synthetic applications of the ochtodane type compounds (12) and (19) to the aldehyde component (4) of the pheromone of the male boll weevils and
奥克托丹骨架,1,1-二甲基-3-乙基环己烷 (1) 的碳骨架是通过酸催化(SnCl4 或 CF3CO2H)环化末端官能化的月桂烯衍生物,苯亚磺酰氯加合物 (7) 高度立体选择性地构建的,来自 7 的末端 β-羟基硫化物 (8) 和月桂烯 6,7-环氧化物 (10)。发现在环化反应中伴随形成的 1 中的 3-外双键的立体选择性显着取决于反应温度,并且在 -78°C 下达到 85-94% 的 E-立体选择性。通过该方法,获得了在C(6)-位上具有硫-或氧-官能团的奥克托丹衍生物。