Fukunaga T, Nishiya K, Kajikawa I, Takeya K, Itokawa H
Chem Pharm Bull (Tokyo). 1989 Jun;37(6):1543-6. doi: 10.1248/cpb.37.1543.
The chemical constituents of Japanese mistletoes, Taxillus yadoriki Danser, Taxillus kaempferi Danser, and Korthalsella japonica Engler, epiphyting to different host trees were compared, and the antimicrobial and hypotensive properties of some isolated flavonoids were examined. Two known flavonoid glycosides, hyperin and quercitrin, were isolated from Taxillus yadoriki Danser, together with fatty acids, phytosterol, and phytosterol-glucoside. There was remarkable variation of contents of quercitrin among the plants on different host trees. From Taxillus kaempferi Danser, fatty acids, phytosterol, phytosterol-glucoside, quercetin, avicularin, and taxillusin were isolated, and quercitrin and hyperin were also identified. There was no remarkable variation of compositions of flavonoid glycosides among the plants on different host trees. A known flavone glycoside, chrysoeriol-4'-O-glucoside, was isolated from Korthalsella japonica Engler, together with fatty acids, phytosterol, oleanolic acid, and phytosterol-glucoside. Chrysoeriol-4'-O-glucoside is contained in this plant irrespective of the host trees.
对寄生在不同寄主树上的日本槲寄生（Taxillus yadoriki Danser、Taxillus kaempferi Danser和Korthalsella japonica Engler）的化学成分进行了比较，并研究了一些分离出的黄酮类化合物的抗菌和降压特性。从Taxillus yadoriki Danser中分离出两种已知的黄酮苷，金丝桃苷和槲皮苷，以及脂肪酸、植物甾醇和植物甾醇葡萄糖苷。不同寄主树上的植物中槲皮苷的含量存在显著差异。从Taxillus kaempferi Danser中分离出脂肪酸、植物甾醇、植物甾醇葡萄糖苷、槲皮素、杨梅苷和松寄生苷，还鉴定出了槲皮苷和金丝桃苷。不同寄主树上的植物中黄酮苷的组成没有显著差异。从Korthalsella japonica Engler中分离出一种已知的黄酮苷，白杨素-4'-O-葡萄糖苷，以及脂肪酸、植物甾醇、齐墩果酸和植物甾醇葡萄糖苷。无论寄主树如何，这种植物中都含有白杨素-4'-O-葡萄糖苷。
