Bridged to Fused Ring Interchange. Methodology for the Construction of Fused Cycloheptanes and Cyclooctanes. Total Syntheses of Ledol, Ledene, and Compressanolide
作者:S. L. Gwaltney、S. T. Sakata、K. J. Shea
DOI:10.1021/jo961005a
日期:1996.1.1
type two intramolecular Diels-Alder reaction (T2IMDA) is an efficient method for the formation of medium rings. The methodology is particularly effective for the construction of seven- and eight-memberedrings. A strategy for the synthesis of functionalized cycloheptanes and cyclooctanes has been developed that involves a bridged to fused ring interchange. The T2IMDA provides a synthesis for rigid
Guaianolides 1. perhydroazulenic lactones as intermediates for total synthesis
作者:A.A. Devreese、M. Demuynck、P.J. De Clercq、M. Vandewalle
DOI:10.1016/s0040-4020(01)91543-1
日期:1983.1
The synthesis of potential guaianolide precursors – is described, involving as a key-step the reductive opening of keto-epoxides –. The latter products were obtained from the common intermediate (and ).
作者:D TERMONT、P. DE CLERCQ、D. DE KEUKELEIRE、M. VANDEWALLE
DOI:10.1055/s-1977-24271
日期:——
An approach to the A/B substructure of 11(15→ 1)-abeotaxanes. A formal synthesis of compressanolide
作者:Gordon L. Lange、Alexandru Merica
DOI:10.1016/s0040-4039(98)00637-6
日期:1998.5
Preparation of highly functionalized 16 constitutes one of the first attempts at the synthesis of the A/B carbon skeleton of the 11(15-->1)-abeotaxanes. Further transformations of labile 16 give enedione 17, an important relay compound in the synthesis of guaianolide compressanolide. (C) 1998 Elsevier Science Ltd. All rights reserved.