A newly discovered antineoplastic compound denominated “phenstatin” is herein described as are synthetic methods for producing phenstatin and the active prodrug thereof. Phenstatin was converted to the sodium phosphate prodrug (3d) by a dibenzylphosphite phosphorylation and subsequent hydrogenolysis sequence 3b→3c→3d. Phenstatin (3b) was found to be a potent inhibitor of tubulin polymerization and the binding of colchicine to tubulin comparable to combretastatin A-4 (1b).
Impurity annihilation; a strategy for solution phase combinatorial chemistry with minimal purification
作者:Anthony G. M. Barrett、Marie L. Smith、Frederic J. Zecri
DOI:10.1039/a806693k
日期:——
The selective annihilation of all contaminants in the solution phase formation of amides or sulfonamides is accomplished by their incorporation into a polyurea and removal by filtration.
通过将所有污染物整合进聚尿素中并通过过滤去除,实现了在溶液相形成酰胺或磺酰胺的选择性消除。
Antineoplastic Agents. 379. Synthesis of Phenstatin Phosphate<sup>1a,</sup>
作者:George R. Pettit、Brian Toki、Delbert L. Herald、Pascal Verdier-Pinard、Michael R. Boyd、Ernest Hamel、Robin K. Pettit
DOI:10.1021/jm970644q
日期:1998.5.1
A structure-activity relationship (SAR) study of the South African willow tree (Combretum caffrum) antineoplastic constituent combretastatin A-4 (1b) directed at maintaining the (Z)-stilbene relationship of the olefin diphenyl substituents led to synthesis of a potent cancer cell growth inhibitor designated phenstatin (3b). Initially phenstatin silyl ether (3a) was unexpectedly obtained by Jacobsen
Synthesis of 3‐Unsubstituted Phthalides from Aryl Amides and Paraformaldehyde via Ruthenium(II)‐Catalyzed C–H Activation
作者:Chao Zhou、Junqi Zhao、Wenkun Chen、Mukhtar Imerhasan、Jun Wang
DOI:10.1002/ejoc.202001160
日期:2020.11.8
A straightforward and convenient route has been developed for the synthesis of 3‐unsubstituted phthalide derivatives from aryl amides and paraformaldehyde by ruthenium(II)‐catalyzedC–Hactivation. The reaction proceeds through tandem ortho‐hydroxymethylation of aryl amide and subsequent intramolecular lactonization.