Design, synthesis, and structure-cytotoxity relationships of aza-steganes
摘要:
Optically active and racemic azaisopicrostegane (3), azapicrostegane (4), and all of four stereoisomers of racemic azaisopicrosteganols and azapicrosteganols (5, 6, 8, 9) were successfully synthesized hy oxidative coupling of dibenzylurethanes (12, 18, 19).
Design, synthesis, and antitumor activity-absolute configuration relationships of podophyllotoxin aza-analogues
摘要:
Optically active and racemic podophyllotoxin aza-analogues 3 approximately 7 were designed and synthesized by a highly stereoselective condensation reaction of a cyclic urethane 10 or 16 with 3,4,5-trimethoxybenzaldehyde 11 and were found to show a promising in vitro and in vivo antitumor activity.