Synthetic study of marine lobane diterpenes. Enantioselective syntheses of lobatrienolide and lobatrientriol from (+)-nopinone
作者:Michiharu Kato、Hiroshi Kosugi、Tsuyoshi Ichiyanagi、Osamu Yamabe
DOI:10.1039/a809983i
日期:——
The first enantioselective syntheses of highly oxygenated lobane diterpenes, (+)-lobatrienolide 4 and (+)-lobatrientriol 5, have been achieved, starting with (4R,5R)-1-acetoxy-4-isopropenyl-5-methyl-5-vinylcyclohex-1-ene 10b which itself has been prepared from (+)-nopinone 7 as a versatile building block toward the asymmetric synthesis of natural products.
首次实现了高度氧化的lobane二萜类化合物(+)-lobatrienolide 4和(+)-lobatrientriol 5的对映选择性合成,起始原料为(4R,5R)-1-acetoxy-4-isopropenyl-5-methyl-5-vinylcyclohex-1-ene 10b,该化合物是以(+)-nopinone 7为基础构件制备的,可用于自然产品的不对称合成。