羟基蒽醌

RESULTS: Sixteen compounds, ursolic acid (1), indole-3-carboxaldehyde (2), indole-3-carboxylic acid (3), p-coumaric acid (4), azelaic acid (5), N-trans-feruloyl tyramine (6), blumenol A (7), 2-hydroxy-3-methylanthraquinone (8), rubiadin l-methyl ether (9), rubiadin (10), quercetin (11), luteolin (12), chrysoeriol 6-C-β-boivinopyranosyl-7-O-β-glucopyranoside (13), alternanthin (14), stigmasta-5, 22-dien-3β-ol (15), and α-spinasterol (16) were obtained from the EtOAc extract of Alternanthera philoxeroides.

结果：得到并鉴定了16个化合物，分别为乌苏酸(1)、吲哚-3-甲醛(2)、吲哚-3-甲酸(3)、对-香豆酸(4)、壬二酸(5)、N-反式阿魏酰基酪胺(6)、布卢姆醇A(7)、2-羟基-3-甲基蒽醌(8)、甲基异茜草素-1-甲醚(9)、甲基异茜草素(10)、槲皮素(11)、木犀草素(12)、柯伊利素-6-C-β-波伊文糖基-7-O-β-吡喃葡萄糖苷(13)、莲子草素(14)、豆甾醇(15)和α-菠甾醇(16)。

Results show that intramolecular hydrogen transfer is not favored in view of the energy trend along IHT coordinate in the region such as hypericin's peri region, where two hydrogens of hydroxyl groups bond with a common oxygen of carbonyl group and exists two IHBs in the peri region. However, intramolecular proton transfer often occur in the molecule with hexahydric cycle hydrogen bond, where only one pair of adjacent hydroxyl group and carbonyl group.

此外选择设计了一个具有三个分子内氢键的体系，兼具金丝桃蒽酮和其他苝醌类光敏剂的分子内氢键特点，研究表明两个羟基氢与共同的羰基氧形成的氢键由于存在较高的势垒，很难发生分子内氢传递，即具有金丝桃蒽酮端位结构的分子其分子内氢传递很难发生，而一般的能形成六元环状结构的分子内氢键体系容易发生分子内氢传递。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。