Diastereoselective Synthesis of 10-(Alkylsulfinyl)- and 10-(Alkenylsulfinyl)isoborneols by Oxidation of the Corresponding Sulfides with 3-Chloroperoxybenzoic Acid
Dimethyl (R)S-2-(10-isobornylsulfinyl)maleate, a chiral synthetic equivalent of dimethyl acetylenedicarboxylate: Preparation and its application to the formal chiral synthesis of (-)-neplanocin A and (-)-aristeromycin
synthetic equivalent of dimethyl acetylenedicarboxylate, dimethyl ()S-2-(10-isobornylsulfinyl)maleate (3), was synthesized. Diels-Alder reaction of (3) with cyclopentadiene proceeded with high stereo- and diastereo-selectivity to afford the cycloadduct (4) almost exclusively, which has been transformed into the half-ester (7), an intermediate in the synthesis of (-)-aristeromycin and (-)-neplanocin A.
合成了一种新的手性合成的炔二羧酸二甲酯,()S -2-(10-异冰片烷基亚磺酰基)马来酸二甲酯(3)。(3)与环戊二烯的狄尔斯-阿尔德反应以高的立体选择性和非对映选择性进行,几乎完全得到环加合物(4),其已转化成半酯(7),是合成(-的中间体) )-阿霉素和(-)-neplanocin A.
Arai, Yoshitsugu; Hayashi, Kazuya; Matsui, Makoto, Journal of the Chemical Society. Perkin transactions I, 1991, # 7, p. 1709 - 1716