NAGAO Y.; SENO K.; FUJITA E., TETRAHEDRON LETT., 1979, NO 45, 4403-4404
作者:NAGAO Y.、 SENO K.、 FUJITA E.
DOI:——
日期:——
NAGAO YOSHIMITSU; SENO KAORU; FUJITA EIICHI, TETRAHEDRON LETT., 1979, NO 34, 3167-3168
作者:NAGAO YOSHIMITSU、 SENO KAORU、 FUJITA EIICHI
DOI:——
日期:——
ZHOU, WEI-SHAN, IYAO GUNE, 19,(1988) N, S. 82-92, 54
作者:ZHOU, WEI-SHAN
DOI:——
日期:——
Effect of β-Alkylthioethyl Substitution in 1,3-Dithianes: Quasianchimeric Assistance in Photoinduced Electron Transfer?
作者:Roman V. Valiulin、Andrei G. Kutateladze
DOI:10.1021/jo800938d
日期:2008.8.1
substitution. Introduction of sulfur at the β-position of the flexible alkyl chain reverses this trend, whereas such substitution at the α-position has negligible effect. This is rationalized in terms of the three electron two center bonds, favorable due to the formation of five-membered cyclic radical cations in the case of β-substitution, which is supported by DFT computations.
Total synthesis of optically active 7α,18- and 7β,18-dimethyl-19-nor-testosterone
作者:Zhi-Ping Zhuang、Wei-Shan Zhou
DOI:10.1016/s0040-4020(01)91382-1
日期:1985.1
A totalsynthesis of opticallyactive 7α (β), 18-dimethyl-19-nor-testosterones 25 and 26 from the new common opticallyactive synthon 5 obtained from acrolein 6 through the following sequence of reactions: 6→7→8→9→10→11→12→5, is described.