Atropisomeric 8-arylchromen-4-ones exhibit enantioselective inhibition of the DNA-dependent protein kinase (DNA-PK)
作者:Céline Cano、Bernard T. Golding、Karen Haggerty、Ian R. Hardcastle、Marcus Peacock、Roger J. Griffin
DOI:10.1039/b926245h
日期:——
Substitution at the 3-position of the dibenzothiophen-4-yl ring of 8-(dibenzo[b,d]thiophen-4-yl)-2-morpholino-4H-chromen-4-one NU7441, a potent and selective DNA-dependent protein kinase (DNA-PK) inhibitor, with propyl, allyl or methyl enabled the separation by chiral HPLC of atropisomers. This is a consequence of restricted rotation about the dibenzothiophene–chromenone bond. Biological evaluation against DNA-PK of the pairs of atropisomers showed a marked difference in potency, with only one enantiomer being biologically active.
在 8-(二苯并[b,d]噻吩-4-基)-2-吗啉基-4H-色烯-4-酮 NU7441(一种强效的选择性 DNA 依赖性蛋白激酶(DNA-PK)抑制剂)的二苯并噻吩-4-基环的 3 位上用丙基、烯丙基或甲基取代,可通过手性 HPLC 分离出对映体。这是二苯并噻吩-色酮键旋转受限的结果。针对 DNA-PK 的生物评估显示,这对对映体的效力存在明显差异,只有一种对映体具有生物活性。