Synthesis, cytotoxic activity, and SAR analysis of the derivatives of taxchinin A and brevifoliol
摘要:
Twenty-one derivatives of taxchinin A (1) and brevifoliol (2) were synthesized and evaluated for cytotoxicity against human non-small lung cancer (A549) cell line. Nine derivatives showed potent activity with IC(50) values from 0.48 to 6.22 mu M. 5-Oxo-13-TBDMS-taxchinin A (11) and5-oxo-13,15-epoxy-13-epi-taxchinin A (15) are the most potent derivatives, with IC(50) at 0.48 and 0.75 mu M, respectively. The structure - activity relationship (SAR) of these compounds established that exocyclic unsaturated ketone at ring C is the key structural element for the activity, while the alpha,beta-unsaturated ketone positioned at ring A has no effect for the activity. The significant cytotoxicity of derivatives 11 and 15 may be due to the conformational change in the taxane rings. The 3D-QSAR study was conducted on this series of compounds, which provided optimal predictive comparative molecular field (CoM-FA) model with cross-validated r(2) (q(2)) value of 0.64. (c) 2008 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.bmc.2008.03.041
作为产物:
描述:
taxchinin A 在
吡啶 、 对甲苯磺酰氯 作用下,
以51.9%的产率得到[(1S,2S,3R,5S,7S,8S,9R,10R,13R)-2,7,9-triacetyloxy-5-hydroxy-8,12,15,15-tetramethyl-4-methylidene-14-oxatetracyclo[11.2.1.01,11.03,8]hexadec-11-en-10-yl] benzoate
参考文献:
名称:
Synthesis, cytotoxic activity, and SAR analysis of the derivatives of taxchinin A and brevifoliol
摘要:
Twenty-one derivatives of taxchinin A (1) and brevifoliol (2) were synthesized and evaluated for cytotoxicity against human non-small lung cancer (A549) cell line. Nine derivatives showed potent activity with IC(50) values from 0.48 to 6.22 mu M. 5-Oxo-13-TBDMS-taxchinin A (11) and5-oxo-13,15-epoxy-13-epi-taxchinin A (15) are the most potent derivatives, with IC(50) at 0.48 and 0.75 mu M, respectively. The structure - activity relationship (SAR) of these compounds established that exocyclic unsaturated ketone at ring C is the key structural element for the activity, while the alpha,beta-unsaturated ketone positioned at ring A has no effect for the activity. The significant cytotoxicity of derivatives 11 and 15 may be due to the conformational change in the taxane rings. The 3D-QSAR study was conducted on this series of compounds, which provided optimal predictive comparative molecular field (CoM-FA) model with cross-validated r(2) (q(2)) value of 0.64. (c) 2008 Elsevier Ltd. All rights reserved.
Twenty-one derivatives of taxchinin A (1) and brevifoliol (2) were synthesized and evaluated for cytotoxicity against human non-small lung cancer (A549) cell line. Nine derivatives showed potent activity with IC(50) values from 0.48 to 6.22 mu M. 5-Oxo-13-TBDMS-taxchinin A (11) and5-oxo-13,15-epoxy-13-epi-taxchinin A (15) are the most potent derivatives, with IC(50) at 0.48 and 0.75 mu M, respectively. The structure - activity relationship (SAR) of these compounds established that exocyclic unsaturated ketone at ring C is the key structural element for the activity, while the alpha,beta-unsaturated ketone positioned at ring A has no effect for the activity. The significant cytotoxicity of derivatives 11 and 15 may be due to the conformational change in the taxane rings. The 3D-QSAR study was conducted on this series of compounds, which provided optimal predictive comparative molecular field (CoM-FA) model with cross-validated r(2) (q(2)) value of 0.64. (c) 2008 Elsevier Ltd. All rights reserved.