作者:Kyuho Moon、Chan-Hong Ahn、Yoonho Shin、Tae Won、Keebeom Ko、Sang Lee、Ki-Bong Oh、Jongheon Shin、Seung-Il Nam、Dong-Chan Oh
DOI:10.3390/md12052526
日期:——
Two new secondary metabolites, arcticoside (1) and C-1027 chromophore-V (2), were isolated along with C-1027 chromophore-III and fijiolides A and B (3–5) from a culture of an Arctic marine actinomycete Streptomyces strain. The chemical structures of 1 and 2 were elucidated through NMR, mass, UV, and IR spectroscopy. The hexose moieties in 1 were determined to be d-glucose from a combination of acid hydrolysis, derivatization, and gas chromatographic analyses. Arcticoside (1) and C-1027 chromophore-V (2), which have a benzoxazine ring, inhibited Candida albicans isocitrate lyase. Chromophore-V (2) exhibited significant cytotoxicity against breast carcinoma MDA-MB231 cells and colorectal carcinoma cells (line HCT-116), with IC50 values of 0.9 and 2.7 μM, respectively.
从北极海洋放线菌链霉菌株的培养物中分离出两种新的次级代谢物北极苷(1)和 C-1027 发色团-V(2),以及 C-1027 发色团-III 和斐济苷 A 和 B(3-5)。通过核磁共振、质谱、紫外光谱和红外光谱阐明了 1 和 2 的化学结构。通过酸水解、衍生化和气相色谱分析,确定 1 中的六糖分子为 d-葡萄糖。具有苯并噁嗪环的北极苷(1)和 C-1027 发色团-V(2)可抑制白色念珠菌异柠檬酸酯裂解酶。Chromophore-V (2) 对乳腺癌 MDA-MB231 细胞和大肠癌细胞(HCT-116 株)具有显著的细胞毒性,IC50 值分别为 0.9 和 2.7 μM。