Desy Wulan Triningsih, Noa Yoshizaki, Yasuhiro Igarashi
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引用次数: 0
摘要
从放线菌隐孢子虫 RD061707 的培养提取物中分离出两种新的螺环酯类化合物,分别命名为 wychimicins E (1) 和 F (2)。这两种化合物的癸醛分子中都缺少一个羟基,其余羟基的相对构型是通过对三乙酰猕猴桃苷 E(3)的核磁共振分析确定的。化合物 1 和 2 对 Kocuria rhizophila 和金黄色葡萄球菌具有很强的抗菌活性。这些化合物对 P388 小鼠白血病细胞也有一定的细胞毒性。
Wychimicins E and F from a rare actinomycete of the genus Cryptosporangium
Two new spirotetronate class compounds designated wychimicins E (1) and F (2) were isolated from the culture extract of an actinomycete Cryptosporangium sp. RD061707. Their structures were determined through extensive NMR analysis in comparison with wychimicin C. Both compounds lack one hydroxy group in the decalin moiety, and the relative configuration of the remaining hydroxy group was assigned by NMR analysis of triacetylwychimicin E (3). Compounds 1 and 2 showed potent antimicrobial activity against Kocuria rhizophila and Staphylococcus aureus. These compounds were also modestly cytotoxic against P388 murine leukemia cells.
期刊介绍:
The Journal of Antibiotics seeks to promote research on antibiotics and related types of biologically active substances and publishes Articles, Review Articles, Brief Communication, Correspondence and other specially commissioned reports. The Journal of Antibiotics accepts papers on biochemical, chemical, microbiological and pharmacological studies. However, studies regarding human therapy do not fall under the journal’s scope. Contributions regarding recently discovered antibiotics and biologically active microbial products are particularly encouraged. Topics of particular interest within the journal''s scope include, but are not limited to, those listed below:
Discovery of new antibiotics and related types of biologically active substances
Production, isolation, characterization, structural elucidation, chemical synthesis and derivatization, biological activities, mechanisms of action, and structure-activity relationships of antibiotics and related types of biologically active substances
Biosynthesis, bioconversion, taxonomy and genetic studies on producing microorganisms, as well as improvement of production of antibiotics and related types of biologically active substances
Novel physical, chemical, biochemical, microbiological or pharmacological methods for detection, assay, determination, structural elucidation and evaluation of antibiotics and related types of biologically active substances
Newly found properties, mechanisms of action and resistance-development of antibiotics and related types of biologically active substances.