作者:R.S. Joshi、G.H. Kulkarni、G.R. Kelkar、S.C. Bhattacharyya
DOI:10.1016/s0040-4020(01)82153-0
日期:1966.1
furnishes an acid, C15H24O2 (VII; R = H), the constitution of which has been decided from spectral evidence and confirmed by conversion into the known primary alcohol (V) and the hydrocarbon (IV). Conclusive evidence in support of VII (R = H), and the stereochemistry at C4 have been obtained from the ozonolysis of VII (R = CH3) which gives as one of the products, S-(+)-α-methylglutaric acid dimethyl ester
固体二氢香豆酚内酯(VI)在金属胺还原后提供一种酸C 15 H 24 O 2(VII; R = H),其组成已由光谱证据确定,并通过转化为已知的伯醇(V )和碳氢化合物(IV)。VII(R = CH 3)的臭氧分解获得了支持VII(R = H)和C 4处的立体化学的确凿证据,该产物作为一种产物提供了S -(+)-α-甲基戊二酸二甲酯(VIIIa),一种已知绝对构型的化合物。臭氧分解的另一产物(-)-2-甲基-3(3'-氧代)-丁基琥珀酸二甲酯(VIIIb)被转化为(-)-2 S-甲基-3 S-丁基丁二酸二甲酯(XV),通过其硫缩酮的脱硫,证明了(-)-山ton苷(X)和二氢木香酚(VI)中CH 3基团在C 11处的α取向。这首次为中心C 11的立体化学提供了在温和的实验条件下获得的化学证明。