Dipolar Cycloaddition Route to the Synthesis of 1a,25-Dihydroxy-26-norvitamin D2 Derivatives

Autor: Peter M. Wovkulich, Bernard Michael Hennessy, Enrico G. Baggiolini, Milan R. Uskokovic
Rok vydání: 1993
Předmět:
Zdroj: HETEROCYCLES. 35:791
ISSN: 0385-5414
DOI: 10.3987/com-92-s(t)53
Popis: The intramolecular dipolar cycloadditions of nitrones derived from aldehydes (8) and (14) were found to proceed with a high degree of diastereoselectivity. By taking advantage of the functionality and stereochemical features residing in the cycloadducts (10) and (11), respectively, the two novel vitamin D 2 derivatives (1c) and (1d) were synthesized
Databáze: OpenAIRE