Paquette, Leo A.; Zhao, Mangzhu, Journal of the American Chemical Society, 1993, vol. 115, # 1, p. 354 - 356
作者:Paquette, Leo A.、Zhao, Mangzhu
DOI:——
日期:——
Paquette Leo A., Zhao Mangzhu, J. Amer. Chem. Soc., 115 (1993) N 1, S 354-356
作者:Paquette Leo A., Zhao Mangzhu
DOI:——
日期:——
An unprecedented silyl triflate-promoted hydride shift within a taxane derivative
作者:Leo A. Paquette、Mangzhu Zhao、Dirk Friedrich
DOI:10.1016/s0040-4039(00)60174-0
日期:1992.11
has been found to experience O-silylation initially in ring A and subsequendy in ring C. The carbonyl group in the central ring is most susceptible to transannular aldolization. Under swamping silylation conditions, an unusual intramolecular hydrideshift occurs to deliver 8.
Enantiospecific Total Synthesis of Natural (+)-Taxusin. 1. Retrosynthesis, Advancement to Diastereomeric <i>trans</i>-Δ<sup>9,10</sup>-Tricyclic Olefinic Intermediates, and the Stereocontrol Attainable Because of Intrinsic Rotational Barriers Therein
作者:Leo A. Paquette、Mangzhu Zhao
DOI:10.1021/ja9805371
日期:1998.6.1
1-vinyl-2-cyclohexenyl-7,7-dimethyl-exo-norbornan-2-ols such as 9, which are derived from D-camphor are shown to undergo stereocontrolled oxyanionic Cope rearrangement to give tricyclic unsaturated ketones. In the specific example of 13, only three subsequent steps are required to effect 1,2-bridge migration with formation of triketone 6. Once the relative reactivities of the carbonyl groups in 6 were elucidated