Synthesis of a 1-acetyl-3α,6-dimethyl-hexahydroazulene. Versatile intermediate for the preparation of terpenoids with bicycle[5.3.O]decane system
作者:Isidro S. Marcos、Isabel M. Oliva、Rosalina F. Moro、David Díez、Julio G. Urones
DOI:10.1016/s0040-4020(01)89399-6
日期:1994.1
achieved in 7 steps with an overall yield of 53%. The cycloheptenone 2 was synthesised from (±)-nerolidol. The enone 35 is a vesatile precursor for the preparation of terpenoids either sesquiterpenes or diterpenes with a bicycle-[5.3.0]decane system.
Approach to the Synthesis of Diterpenes with the Bicyclo[5.3.0]decane System: (±) 10-epi-tormesol
作者:Isidro S. Marcos、Isabel M. Oliva、David Díez、Pilar Basabe、Anna M. Lithgow、Rosalina F. Moro、Narciso M. Garrido、Julio G. Urones
DOI:10.1016/0040-4020(95)00796-b
日期:1995.11
The synthesis of (±) 10-epi-tormesol, 27, has been achieved from (±) 1-acetyl-3a,6 dimethylhexahydroazulene 1, by coupling of 5, a dehydroderivative of 1, with 23. The same synthetic procedure afforded a series of diterpenes 24–26 and 28 with the same biannular system. Direct reduction of 1 with different methods does not give the desired spatial relationship (trans/cis) between Me-C7/H-6/H-10 on the