Enantiomeric bleomycin model compounds bearing long alkyl-chain
摘要:
Enantiomeric bleomycin model compounds bearing long alkyl-chain were synthesized and the physicochemical properties of their metal complexes were studied. The Fe complexes of these compounds exhibited a strong DNA cleaving activity in a chiral discriminative manner.
Enantiomeric bleomycin model compounds bearing long alkyl-chain
摘要:
Enantiomeric bleomycin model compounds bearing long alkyl-chain were synthesized and the physicochemical properties of their metal complexes were studied. The Fe complexes of these compounds exhibited a strong DNA cleaving activity in a chiral discriminative manner.
Syntheses and Catalytic Actions of Self-Micelle-Forming Hydrolase Models
作者:Kazuo Kawaguchi、Yasukazu Ohkatsu、Tom Kusano
DOI:10.1246/bcsj.63.442
日期:1990.2
Hydrolase model catalysts, N-alkyl-Nα-[2-(d-polyhydroxypentyl)-3-acetyl-4-thiazolidinylcarbonyl]-l-histidinamide (acyclic-type catalyst) and N-(N-alkanoyl-l-nistidyl)-β-d-glucosamine (cyclic-type catalyst), which easily form micelles in water by themselves, have been designed and the stereostructural effects of sugar moieties examined on stereoselective hydrolyses of p-nitrophenyl N-benzyloxycarbonyl-l-(or d-)phenylalaninates. An acyclic-type catalyst is l-selective, while a cyclic-type catalyst is l-selective. The stereorecognition of acyclictype catalysts was found to be performed by a sugar moiety, rather than the histidyl type. Comparisons of the activities of three acyclic-type catalysts having different sugar moieties show that a mannose-derived catalyst is the most stereoselective. Judging from kinetic data, it is concluded that the configuration of OH on C-3 of the sugar moiety takes a significant part in the stereorecognition of a catalyst.
Enantiomeric bleomycin model compounds bearing long alkyl-chain
Enantiomeric bleomycin model compounds bearing long alkyl-chain were synthesized and the physicochemical properties of their metal complexes were studied. The Fe complexes of these compounds exhibited a strong DNA cleaving activity in a chiral discriminative manner.