Diels-Alder approaches to pentacyclic triterpenes of the arborane and the fernane families

Autor: Ricardo Rodriguez, Siméon Arseniyadis, Eric Guittet, Jose Camara, Loïc Toupet
Rok vydání: 1993
Předmět:
Zdroj: Tetrahedron Letters. 34:1141-1144
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)77511-3
Popis: The high pressure Diels-Alder reaction of diene 2 and ene-dione 3 does not lead to the arborane skeleton but to angular isomers 5. The AB + D synthesis of tetracyclic ene-dione 6, followed by construction of the E-ring by a double alkylation, yields the isoarborinol precursor 7; the fernane series is similarly accessed.
Databáze: OpenAIRE