Structure elucidation by synthesis of four metabolites of the antitumor drug ENMD-1198 detected in human plasma samples
摘要:
ENMD-1198 is a biologically active analogue of the antitumor drug 2-methoxyestradiol. Four human metabolites of ENMD-1198 were identified through synthesis and liquid chromatography/mass spectrometry comparisons of the metabolites with the synthetic standards. Two metabolites (3 and 4) are epimers resulting from benzylic hydroxylation at C-6. Two additional metabolites (5 and 6) are formed by epimeric hydroxylation at C-6 and alpha-epoxidation of the 16,17-alkene. The syntheses provided sufficient quantities of the metabolites for cytotoxicity studies to proceed. The 6-beta-ol 4 was moderately less cytotoxic than the parent drug, while the remaining three metabolites (3, 5, and 6) were significantly less cytotoxic. (C) 2009 Elsevier Ltd. All rights reserved.
Structure elucidation by synthesis of four metabolites of the antitumor drug ENMD-1198 detected in human plasma samples
摘要:
ENMD-1198 is a biologically active analogue of the antitumor drug 2-methoxyestradiol. Four human metabolites of ENMD-1198 were identified through synthesis and liquid chromatography/mass spectrometry comparisons of the metabolites with the synthetic standards. Two metabolites (3 and 4) are epimers resulting from benzylic hydroxylation at C-6. Two additional metabolites (5 and 6) are formed by epimeric hydroxylation at C-6 and alpha-epoxidation of the 16,17-alkene. The syntheses provided sufficient quantities of the metabolites for cytotoxicity studies to proceed. The 6-beta-ol 4 was moderately less cytotoxic than the parent drug, while the remaining three metabolites (3, 5, and 6) were significantly less cytotoxic. (C) 2009 Elsevier Ltd. All rights reserved.
Structure elucidation by synthesis of four metabolites of the antitumor drug ENMD-1198 detected in human plasma samples
作者:Zhenglai Fang、Gregory E. Agoston、Gaetan Ladouceur、Anthony M. Treston、LiQuan Wang、Mark Cushman
DOI:10.1016/j.tet.2009.10.046
日期:2009.12
ENMD-1198 is a biologically active analogue of the antitumor drug 2-methoxyestradiol. Four human metabolites of ENMD-1198 were identified through synthesis and liquid chromatography/mass spectrometry comparisons of the metabolites with the synthetic standards. Two metabolites (3 and 4) are epimers resulting from benzylic hydroxylation at C-6. Two additional metabolites (5 and 6) are formed by epimeric hydroxylation at C-6 and alpha-epoxidation of the 16,17-alkene. The syntheses provided sufficient quantities of the metabolites for cytotoxicity studies to proceed. The 6-beta-ol 4 was moderately less cytotoxic than the parent drug, while the remaining three metabolites (3, 5, and 6) were significantly less cytotoxic. (C) 2009 Elsevier Ltd. All rights reserved.