Oxime esters of anthraquinone as photo-induced DNA-cleaving agents for single- and double-strand scissions
摘要:
Anthraquinone-O-9-(4-cyanobenzoyl)oxime (13) with binding constant of 4.49x 10(4) M-1 exhibited single-strand scission of DNA at the concentration of 10 muM and double-strand scission at 50 muM upon UV irradiation. (C) 2003 Published by Elsevier Science Ltd.
New Approach to Biomimetic Transamination Using Bifunctional [1,3]-Proton Transfer Catalysis in Thioxanthenyl Dioxide Imines
作者:Anders Hjelmencrantz、Ulf Berg
DOI:10.1021/jo0106748
日期:2002.5.1
A pyridoxamine equivalent, 9-aminothioxanthene 10,10-dioxide, has been designed that is capable of affording transamination in good to excellent yields of natural as well as artificial amino acids. Amidines and guanidines in catalytic amounts were capable of performing [1,3]-proton transfer in the imines under mild conditions, whereas various simple amines failed. The use of chiral catalysts resulted in modest asymmetric induction (ee less than or equal to 45%). The electronic dependence in para-substituted phenyl glyoxylate imines, isotope effects, and computational studies support a stepwise, bifunctional mechanism for amidine and guanidine catalysts. Attempts toward an autocatalytic model system are described.
Catsoulacos, P.; Pelecanou, M.; Camoutsis, Ch., Journal of Heterocyclic Chemistry, 1991, vol. 28, # 5, p. 1437 - 1440
作者:Catsoulacos, P.、Pelecanou, M.、Camoutsis, Ch.
DOI:——
日期:——
Beckmann Rearrangement of Some Cyclic Sulfone Ketoximes<sup>1</sup>
作者:WILLIAM E. TRUCE、JOHN A. SIMMS
DOI:10.1021/jo01357a007
日期:1957.6
Catsoulacos, Journal of Heterocyclic Chemistry, 1967, vol. 4, p. 645,646
作者:Catsoulacos
DOI:——
日期:——
Oxime esters of anthraquinone as photo-induced DNA-cleaving agents for single- and double-strand scissions
作者:Jih Ru Hwu、Shwu-Chen Tsay、Shih Chin Hong、Yi-Jing Leu、Chih-Fen Liu、Shang-Shing P Chou
DOI:10.1016/s0040-4039(03)00375-7
日期:2003.3
Anthraquinone-O-9-(4-cyanobenzoyl)oxime (13) with binding constant of 4.49x 10(4) M-1 exhibited single-strand scission of DNA at the concentration of 10 muM and double-strand scission at 50 muM upon UV irradiation. (C) 2003 Published by Elsevier Science Ltd.