(2S,6S,8S)-2,8-Dimethyl-1,7-dioxaspiro[5.5]undecane: A natural spiroacetal lacking anomeric stabilisation
摘要:
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.