Synthesis and biological evaluation of hydrazidomycin analogues
摘要:
Hydrazidomycin A is an unusual secondary metabolite of Streptomyces atratus that features a rare enehydrazide core. To learn more about structure-activity relationships of the reported cytotoxic and antiproliferative agent several synthetic routes were explored to synthesize a variety of hydrazidomycin derivatives. Specifically, the size of the side chains, the nature of the double bond and the polar head group were altered. Overall, fourteen analogues were tested for their cytotoxic and antiproliferative effects. Re-examination of synthetic hydrazidomycin A suggests that the antiproliferative activity is attributed to a yet unknown compound that results from degradation or rearrangement. Several of the less complex analogues, however, show antiproliferative activities against individual cancer cell lines and turned out to be more potent than hydrazidomycin A. (c) 2013 Elsevier Ltd. All rights reserved.
Hydrazidomycins A–C and elaiomycins B–C represent a family of unusual, naturally occurring enehydrazides produced by Streptomyces sp. A general synthetic approach to access these densely functionalized hydrazine derivatives is exemplified by the first totalsynthesis of hydrazidomycin A. The modular synthesis involves a ruthenium-catalyzed hydroamidation of an alkyne and a hydrazide-derived phthalimide
Hydrazidomycins A–C 和 elaiomycins B–C 代表了一个不寻常的、天然存在的 enehydrazides 家族,由 Streptomyces sp. 产生。获得这些密集官能化肼衍生物的一般合成方法以肼基霉素 A 的首次全合成为例。模块化合成包括钌催化的炔烃和酰肼衍生的邻苯二甲酰亚胺的加氢酰胺化,主要产生 Z 型的烯酰肼。
Synthesis and biological evaluation of hydrazidomycin analogues
Hydrazidomycin A is an unusual secondary metabolite of Streptomyces atratus that features a rare enehydrazide core. To learn more about structure-activity relationships of the reported cytotoxic and antiproliferative agent several synthetic routes were explored to synthesize a variety of hydrazidomycin derivatives. Specifically, the size of the side chains, the nature of the double bond and the polar head group were altered. Overall, fourteen analogues were tested for their cytotoxic and antiproliferative effects. Re-examination of synthetic hydrazidomycin A suggests that the antiproliferative activity is attributed to a yet unknown compound that results from degradation or rearrangement. Several of the less complex analogues, however, show antiproliferative activities against individual cancer cell lines and turned out to be more potent than hydrazidomycin A. (c) 2013 Elsevier Ltd. All rights reserved.