Synthesis of three stereoisomeric forms of 2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, the main component of the cephalic secretion of andrena wilkella
作者:Kenji Mori、Kaichi Tanida
DOI:10.1016/s0040-4020(01)98857-x
日期:1981.1
Three stereoisomers of 2,8-dimethyl-1,7-dioxaspiro[5,5]undecane were synthesized from acetoaceticester by utilizing its yeast reduction and dianion alkylation.
(2S,6S,8S)-2,8-Dimethyl-1,7-dioxaspiro[5.5]undecane: A natural spiroacetal lacking anomeric stabilisation
作者:Junjie Chen、Mary T. Fletcher、William Kitching
DOI:10.1016/0957-4166(95)00107-z
日期:1995.4
The absolute stereochemistry of the non-anomerically stabilised spiroacetal, (Z,Z)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, 4 which is a significant component of the pheromonal gland secretion of the cucumber fly (Bactrocera cucumis French) is shown to be (2S,6S,8S) by synthesis of its enantiomer, and chiral gas chromatographic analyses.
Enhancement of optical purity of a product by removing unwanted diastereomers in the course of a chiral synthesis: new synthesis of the stereoisomers of 2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, the pheromone of
作者:Kenji Mori、Hidenori Watanabe
DOI:10.1016/s0040-4020(01)87431-7
日期:1986.1
Chiral 2- and 8-functionalised 1,7-dioxaspiro[5.5]undecanes via asymmetric dihydroxylation
Asymmetric dihydroxylation with AD-mix-alpha [or AD-mix-beta] carried out on an appropriate ketodiene precursor afforded (2S, 6S, 8S) [or (2R, 6R, 8R)] 2,8-dihydroxymethyl-1,7-dioxaspiro[5,5]undecane. Subsequent synthesis of (+)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane (insect pheromone) and (+)-2-iodomethyl-8-acetyloxymethyl-1,,7-dioxaspiro[5,5]undecane are described.