Synthesis and anti-aromatase activity of some new steroidal D-lactones
摘要:
Starting from D-seco derivatives of 5-androstene 1-3, the D-homo lactones, 4 and 5, were synthesized. By the Oppenauer oxidation and/or by dehydration of 4 and 5 with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) or 2,3,5,6-tetrachloro-1,4-betizoquinone (chloranil), the corresponding D-lactones 6-12 were obtained. The structures of 6 and 10 were unambiguously proved by the appropriate X-ray structural analysis. Anti-aromatase assay showed that tested compounds possess inhibition potency, however. two to four times smaller (IC50 from 0.2 to 0.7 mum, respectively) in comparison to aminoglutethimide (AG). (C) 2004 Elsevier Inc. All rights reserved.
Synthesis and anti-aromatase activity of some new steroidal D-lactones
摘要:
Starting from D-seco derivatives of 5-androstene 1-3, the D-homo lactones, 4 and 5, were synthesized. By the Oppenauer oxidation and/or by dehydration of 4 and 5 with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) or 2,3,5,6-tetrachloro-1,4-betizoquinone (chloranil), the corresponding D-lactones 6-12 were obtained. The structures of 6 and 10 were unambiguously proved by the appropriate X-ray structural analysis. Anti-aromatase assay showed that tested compounds possess inhibition potency, however. two to four times smaller (IC50 from 0.2 to 0.7 mum, respectively) in comparison to aminoglutethimide (AG). (C) 2004 Elsevier Inc. All rights reserved.