Synthesis and Biological Evaluation of Fully Functionalized seco-Pancratistatin Analogues
摘要:
The total synthesis of fully functionalized polyhydroxyamide B,C-seco-analogues of the anticancer compound pancratistatin (PST) (1) is reported. Key steps include an Evans' MgCl2-promoted anti-aldol reaction between a functionalized L-threose derivative and (R)-(+)-oxazolidinone to stereoselectively form the C-1/C-10b bond and a regiospecific radical-mediated oxidative fragmentation of a 1,3-benzylidene. The B,C-seco compounds 25 and 26 exhibited low activity (ED50 > 30 yg/mL) for inducing apoptosis in human cancer cells.
Structure–activity studies on seco-pancratistatin analogs: Potent inhibitors of human cytochrome P450 3A4
摘要:
Two total syntheses of fully functionalized seco-analogs of the anticancer compound pancratistatin are reported. Structure-activity relationship (SAR) studies identified potent and selective inhibitors of human cytochrome P450 3A4 (CYP3A4) and revealed several core pharmacophoric elements. These studies identify potential roadblocks and will guide the further development of a viable selective clinical pancratistatin derivative. (C) 2009 Elsevier Ltd. All rights reserved.
Unusual Magnesium Chloride Catalyzed Non-Evansanti-Aldol Reactions of an EnolizableL-Threose Derivative
作者:James McNulty、Jerald J. Nair、Marcin Sliwinski、Laura E. Harrington、Siyaram Pandey
DOI:10.1002/ejoc.200700854
日期:2007.12
The magnesiumchloride catalyzed anti-aldol reaction of phenyl acetate derived oxazolidinones proceeds readily with enolizable L-threose derivative 8 to provide anti-aldol adducts in high yields and with very high diastereoselectivities. The reaction is also efficient with aromatic aldehydes and provides slightly lower diastereoselectivities. This extension
Synthesis and Biological Evaluation of Fully Functionalized <i>seco</i>-Pancratistatin Analogues
作者:James McNulty、Jerald J. Nair、Carly Griffin、Siyaram Pandey
DOI:10.1021/np0705460
日期:2008.3.1
The total synthesis of fully functionalized polyhydroxyamide B,C-seco-analogues of the anticancer compound pancratistatin (PST) (1) is reported. Key steps include an Evans' MgCl2-promoted anti-aldol reaction between a functionalized L-threose derivative and (R)-(+)-oxazolidinone to stereoselectively form the C-1/C-10b bond and a regiospecific radical-mediated oxidative fragmentation of a 1,3-benzylidene. The B,C-seco compounds 25 and 26 exhibited low activity (ED50 > 30 yg/mL) for inducing apoptosis in human cancer cells.
Structure–activity studies on seco-pancratistatin analogs: Potent inhibitors of human cytochrome P450 3A4
作者:James McNulty、Jerald J. Nair、Mohini Singh、Denis J. Crankshaw、Alison C. Holloway
DOI:10.1016/j.bmcl.2009.08.032
日期:2009.10
Two total syntheses of fully functionalized seco-analogs of the anticancer compound pancratistatin are reported. Structure-activity relationship (SAR) studies identified potent and selective inhibitors of human cytochrome P450 3A4 (CYP3A4) and revealed several core pharmacophoric elements. These studies identify potential roadblocks and will guide the further development of a viable selective clinical pancratistatin derivative. (C) 2009 Elsevier Ltd. All rights reserved.