Synthesis of unusual cholestane analogs by Diels-Alder reaction (A+CD → ABCD)
摘要:
Unprecedented cholestane analogs have been synthesized by Diels-Alder reactions between a diene generated in high yields from vitamin D-3 and appropriate dienophiles. This strategy is useful for the scarcely utilized A+CD --> ABCD approach to the tetracyclic steroid nucleus. (C) 1997 Published by Elsevier Science Ltd.
Cytotoxic ring A-modified steroid analogues derived from Grundmann’s ketone
作者:Christoph D. Mayer、Franz Bracher
DOI:10.1016/j.ejmech.2011.04.036
日期:2011.8
A series of steroid and azasteroid analogues containing a six-membered ring A with various functionalities were synthesized. Furthermore, the syntheses of tetracyclic analogues bearing a five-membered A-ring and the syntheses of a number of bicyclic secosteroid analogues were carried out. All compounds were tested for their antibacterial, antifungal and cytotoxic activities. Among all tested compounds
Synthesis of unusual cholestane analogs by Diels-Alder reaction (A+CD → ABCD)
作者:Francesco De Riccardis、Irene Izzo、Consiglia Tedesco、Guido Sodano
DOI:10.1016/s0040-4039(97)00270-0
日期:1997.3
Unprecedented cholestane analogs have been synthesized by Diels-Alder reactions between a diene generated in high yields from vitamin D-3 and appropriate dienophiles. This strategy is useful for the scarcely utilized A+CD --> ABCD approach to the tetracyclic steroid nucleus. (C) 1997 Published by Elsevier Science Ltd.