A novel synthesis of chiral cyclic hydroxamic acids (4, 6, 8 and 10) related to cyclodipeptides is described. The crucial reduction of the nitro group of the N-nitroacetyl derivatives of (S)-α-amino acid esters is brought about by zinc–aq. ammonium chloride. The FeIII and CuII complexes of one such cyclic hydroxamic acid 10a have been prepared and their DNAse activity investigated.
描述了与环二肽相关的手性环羟
肟酸(4、6、8和10)的新合成方法。通过
锌-aq.
氯化铵实现了(S)-
α-氨基酸酯的N-硝基乙酰衍
生物的硝基基团的关键还原。制备了一种这种环羟
肟酸10a的FeIII和CuII复合物,并研究了它们的
DNA酶活性。