红藻小珊瑚藻化学成分研究

目的：对红藻小珊瑚藻Corallina pilulifera进行了化学成分研究。方法：利用正相硅胶柱色谱、Sephadex LH-20柱色谱、反相HPLC及重结晶等方法进行分离纯化。用MS,¹H-NMR,¹³C-NMR,DEPT等鉴定化合物的结构。通过MTT法对单体化合物进行细胞毒活性筛选。结果：从红藻小珊瑚藻中分离并鉴定了7个化合物,分别为(E)-phytol epoxide(1),phytenal(2),phytol(3),dehydrovomifoliol(4),loliolide(5),3β-hydroxy-5α,6α-epoxy-7-megastigmene-9-one(6),4-hydroxybenzaldehyde(7)。结论：所有化合物均为首次从本种海藻中分离得到。细胞毒活性试验结果显示所有化合物在质量浓度为10 μg·mL-1均无明显细胞毒活性。

Chemical constituents from red alga Corallina pilulifera

OBJECTIVE: To investigate the chemical constituents of red alga Corallina pilulifera. METHOD: Compounds were isolated by normal phase silica gel and Sephadex LH - 20 gel column chromatography, reverse phase HPLC and recrystallization. Their structures were elucidated by spectroscopic methods including MS, 1H-NMR, 13C-NMR, HSQC, HMBC. Cytotoxicity of the compounds was screened by using standard MTT method. RESULT: Seven compounds were isolated from red alga C. pilulifera, their structures were identified as (E) -phytol epoxide (1), phytenal (2), phytol (3), dehydrovomifoliol (4), loliolide (5), 3beta-hydroxy-5alpha, 6alpha-epoxy-7-megastigmene-9-one (6), 4-hydroxybenzaldehyde (7). CONCLUSION: All of the compounds were obtained from this species for the first time. These compounds were inactive (IC50 > 10 microg x mL(-1)) in the MTT assay.