In this paper, a series of novel abietyl and dehydroabietyl ureas, thioureas, amides, and thioamides bearingadamantanemoieties were designed, synthesized, and evaluated for their inhibitory activities against tyrosil-DNA-phosphodiesterase 1 (TDP1). The synthesized compounds were able to inhibit TDP1 at micromolar concentrations (0.19–2.3 µM) and demonstrated low cytotoxicity in the T98G glioma cell
Steroids and sex hormones. Part 262. The radical induced stannane reduction of selenoesters and selenocarbonates: A new method for the degradation of carboxylic acids to nor-alkanes and for desoxygenation of alcohols to alkanes
Esters of carboselenoic acids, formed from carboxylicacids by conventional methods, undergo reaction with tributyltin hydride in inert aromatic solvents, either by heating to give the corresponding aldehyde or the corresponding alkane depending on reaction temperature and the structure of the parent carboxylicacid, or by ultraviolet irradiation at ambient temperature when the aldehyde is formed predominantly
A new organocatalyst derived from abietic acid and 4-hydroxy-l-proline for direct asymmetric aldol reactions in aqueous media
作者:Sudipto Bhowmick、Sunita S. Kunte、Kartick C. Bhowmick
DOI:10.1016/j.tetasy.2014.07.012
日期:2014.10
Enantioselective direct aldol reactions were carried out in aqueous media with a neworganocatalyst that was derived from 4-hydroxy-l-proline and abietic acid via a simple and convenient synthetic protocol with a high overall yield (75%). The neworganocatalyst was used for aldol reactions between substituted aromatic aldehydes and various ketones in the presence of several acid additives in aqueous
Synthesis of New Hybrids of Abietic Acid and 1,3,4-Oxadiazoles
作者:A. V. Shpatov、S. S. Zakharova、S. A. Popov
DOI:10.1007/s10600-022-03662-5
日期:2022.3
New hybrid compounds of abieticacid with 2-thione-, 2-alkylthio-, and 2-alkylamino-1,3,4-oxadiazole fragments at various distances from the diterpene skeleton were synthesized in situ via cyclization in acidic medium of intermediate dithiocarbamates or cyclodesulfurization of intermediate acylthiosemicarbazides through the action of Hg(OAc)2.
pharmaceutical molecules. Herein, we report metal-free, electrochemical, highly chemo- and regioselective synthesis of gem-diselenides through the coupling of α-keto sulfoxonium ylides with diselenides. The versatility of the electrochemical manifold enabled the selenylation with ample scope and broad functional group tolerance, as well as setting the stage for modification of complex bioactive molecules. Detailed
有机硒化合物是药物分子的重要支架。在此,我们报道了通过α-酮基亚砜叶立德与二硒化物的偶联,实现了无金属、电化学、高度化学和区域选择性合成偕二硒化物。电化学歧管的多功能性使得硒基化具有足够的范围和广泛的官能团耐受性,并为复杂生物活性分子的修饰奠定了基础。详细的机理研究表明,关键的 C-Se 键是通过电合成方案使用n -Bu 4 NI 作为电解质和催化剂构建的。最后,所需的α-酮宝石-二硒化物对白色念珠菌表现出优异的抗菌活性,可以将其确定为进一步探索的先导化合物。