Shikonin, a natural naphthoquinone, has attracted much attention due to its various biological activities. Two shikonin glucosides, shikonin-1′,8-di-O-β-D-glucopyranoside (1) and shikonin-1′-O-β-D-glucopyranoside (2), were biosynthesized through in vitro enzymatic glycosylation and their structures were elucidated using spectroscopic techniques. The water-solubility and stability of compounds 1 and 2 were significantly higher than those of the parent compound. Furthermore, compound 2 showed moderate cytotoxicity against six cancer cell lines, with IC50 values ranging from 36.10 to 67.47 µM. This research indicated that in vitro enzymatic glycosylation of shikonin is an effective strategy to improve it water solubility and chemical stability.
志贺宁是一种天然
萘醌,因其多种
生物活性而备受关注。通过体外酶糖基化技术,
生物合成了两种志贺宁
葡糖苷,即志贺宁-1′,8-二-O-β-
D-吡喃葡萄糖苷(1)和志贺宁-1′-O-β-
D-吡喃葡萄糖苷(2),并利用光谱技术阐明了它们的结构。化合物 1 和 2 的
水溶性和稳定性明显高于母体化合物。此外,化合物 2 对六种癌细胞株具有中等程度的细胞毒性,IC50 值在 36.10 至 67.47 µM 之间。这项研究表明,对志贺宁进行体外酶糖基化是提高其
水溶性和
化学稳定性的有效策略。