A new natural product (1) together with 26 know compounds were isolated from the Bulbs of Ornithogalum caudatum. Their structures were established on the basis of spectral analyses as n-butyl pyroglutamate (1), nonade...A new natural product (1) together with 26 know compounds were isolated from the Bulbs of Ornithogalum caudatum. Their structures were established on the basis of spectral analyses as n-butyl pyroglutamate (1), nonadecyl alcohol(2), eicosanol(3), behenic acid(4), b-sitosterol(5), stigmasterol(6), glycerol 1-monocerotate(7), pyrocatechol(8), p-ethoxybenzoic acid(9), p-coumarinic acid(10), protocatechuric acid(11), ursolic acid(12), betulinic acid(13), fumaric acid(14), succinic acid(15), uracil(16), xanthine(17), quercetin(18), kaempferol (19), isorham-netin(20), adenosine(21), daucosterol(22), stigmasterol 3-O-b-D-glucopyranoside(23), quercetin 3-O-b-D-glucopyra-noside(24), kaempferol 3-O-b-D-glucopyranoside(25), rutin(26), and kaempferol 3-O-b-rutinoside(27). All of them, except compound 5, were isolated from this plant for the first time.展开更多
本文采用组织匀浆MDA比色法测定了山柰酚、山柰酚 3 O β D 葡萄糖甙、槲皮素 3 O β D 葡萄糖甙三种贵州老鹰茶 (Litseacoreana)黄酮类提取物对大鼠离体心、脑、肝、肾四种组织脂质过氧化的影响 ,发现以上三种化合物均具有明显的抗...本文采用组织匀浆MDA比色法测定了山柰酚、山柰酚 3 O β D 葡萄糖甙、槲皮素 3 O β D 葡萄糖甙三种贵州老鹰茶 (Litseacoreana)黄酮类提取物对大鼠离体心、脑、肝、肾四种组织脂质过氧化的影响 ,发现以上三种化合物均具有明显的抗氧化活性 ,并呈量效关系 ,且抗氧化活性为 :山柰酚 >槲皮素 3 O β D 葡萄糖甙 >山柰酚 3 O β D 葡萄糖甙 ;以上三种物质对SD大鼠四种离体组织MDA抑制率为 :肾组织 >心组织 >肝组织 >脑组织。本文的研究结果为开发和利用贵州老鹰茶叶中黄酮类天然抗氧化剂提供了一定的科学依据。展开更多
基金This work was supported by the Ministry of Science and Technology of China (96-901-05-266).
文摘A new natural product (1) together with 26 know compounds were isolated from the Bulbs of Ornithogalum caudatum. Their structures were established on the basis of spectral analyses as n-butyl pyroglutamate (1), nonadecyl alcohol(2), eicosanol(3), behenic acid(4), b-sitosterol(5), stigmasterol(6), glycerol 1-monocerotate(7), pyrocatechol(8), p-ethoxybenzoic acid(9), p-coumarinic acid(10), protocatechuric acid(11), ursolic acid(12), betulinic acid(13), fumaric acid(14), succinic acid(15), uracil(16), xanthine(17), quercetin(18), kaempferol (19), isorham-netin(20), adenosine(21), daucosterol(22), stigmasterol 3-O-b-D-glucopyranoside(23), quercetin 3-O-b-D-glucopyra-noside(24), kaempferol 3-O-b-D-glucopyranoside(25), rutin(26), and kaempferol 3-O-b-rutinoside(27). All of them, except compound 5, were isolated from this plant for the first time.
文摘本文采用组织匀浆MDA比色法测定了山柰酚、山柰酚 3 O β D 葡萄糖甙、槲皮素 3 O β D 葡萄糖甙三种贵州老鹰茶 (Litseacoreana)黄酮类提取物对大鼠离体心、脑、肝、肾四种组织脂质过氧化的影响 ,发现以上三种化合物均具有明显的抗氧化活性 ,并呈量效关系 ,且抗氧化活性为 :山柰酚 >槲皮素 3 O β D 葡萄糖甙 >山柰酚 3 O β D 葡萄糖甙 ;以上三种物质对SD大鼠四种离体组织MDA抑制率为 :肾组织 >心组织 >肝组织 >脑组织。本文的研究结果为开发和利用贵州老鹰茶叶中黄酮类天然抗氧化剂提供了一定的科学依据。