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。
Bile acid hydrazides: gelation, structural, physical and spectroscopic properties
作者:Vandana S. Pore、Sandip G. Agalave、Shrikant G. Pharande、Prashant A. Patil、Amol S. Kotmale
DOI:10.1039/c4nj01352b
日期:——
Novel bile acid hydrazides are synthesized and temperature dependent NMR, IR and rheological experiments are done for understanding the role of intra-molecular hydrogen bonding leading to gelation.
Lipophilic gold(I) complexes with 1,3,4-oxadiazol-2-thione or 1,3-thiazolidine-2-thione moieties: synthesis and their cytotoxic and antimicrobial activities
作者:Angelina Maria de Almeida、Bruno Assis de Oliveira、Pedro Pôssa de Castro、Camille Carvalho de Mendonça、Ricardo Andrade Furtado、Heloiza Diniz Nicolella、Vânia Lúcia da Silva、Cláudio Galuppo Diniz、Denise Crispim Tavares、Heveline Silva、Mauro Vieira de Almeida
DOI:10.1007/s10534-017-0046-6
日期:2017.12
Novel lipophilic gold(I) complexes containing 1,3,4-oxadiazol-2-thione or 1,3-thiazolidine-2-thione derivatives were synthesized and characterized by IR, high resolution mass spectrometry, and 1H, 13C 31P NMR. The cytotoxicity of the compounds was evaluated considering cisplatin and/or auranofin as reference in different tumor cell lines: coloncancer (CT26WT), metastatic skin melanoma (B16F10), breast
Efficient synthesis of a series of novel fructose-based 3-acetyl-5-alkyl-2,3-dihydro-1,3,4-oxadiazole derivatives and studies of the reaction mechanism
作者:Dong Han、Xiang-Bao Meng、Lin-Na Wang、Hong Liu、Yun Yao、Zhuo Wang、Zhen-Jun Yang、Zhen-Min Liu、Zhong-Jun Li
DOI:10.1016/j.tetasy.2008.12.033
日期:2009.3
A series of novel alkyl substituted fructose-based oxadiazoles were synthesized and their cytotoxic activities toward tumor cells were investigated. We studied the reaction mechanism and the stereochemistry of the reaction. Tautomerization between isomers 2 and 3 was observed in solution. The tautomerization was accelerated by heating or in the presence of acetic acid. An intermediate 6 during the
Microwave irradiated synthesis of Schiff bases of 4-(arylideneamino)-5-alkyl-2,4- dihydro-1,2,4-triazole-3-thione containing 1,2,4-triazole segment
作者:Akhgar, Mohammad Reza、Ghazanfari, Dadkhoda、Ghodratbeigi, Mohsen、Shirmohammadi, Mahdi、Souzangarzadeh, Saeid
DOI:10.3906/kim-2105-39
日期:——
Novel compounds based on the 1,2,4-triazole skeleton were synthesized. A class of 4-amino-5-alkyl-4H-1,2,4-triazole-3- thione created by reaction of thiocarbohydrazide with long-chain aliphatic carboxylic acids, and then the Schiff bases were obtained in the media of heat and microwave waves, in the presence and the absence of a catalyst. Their chemical structures were assayed by elemental analysis, also device spectroscopic methods.