3-[(2R,3R,5S,6R)-6-[(2R)-butan-2-yl]-3,5-dimethyloxan-2-yl]-2,4-dimethoxy-1-oxido-5-phenylpyridin-1-ium | 1374017-64-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 3-[(2R,3R,5S,6R)-6-[(2R)-butan-2-yl]-3,5-dimethyloxan-2-yl]-2,4-dimethoxy-1-oxido-5-phenylpyridin-1-ium
• CAS: 1374017-64-7
• 化学式: C₂₄H₃₃NO₄
• 分子量: 399.53
• InChiKey: NLCQIWZNCQRSID-AMQPJZBWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  29
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  53.2
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  重氮甲烷 、 septoriamycin A 以 甲醇 、 乙醚 为溶剂， 反应 2.0h， 以8 mg的产率得到
  参考文献：
  名称：

  Antiprotozoal and Antimicrobial Compounds from the Plant Pathogen Septoria pistaciarum

  摘要：

  Four new 1,4-dihydroxy-5-phenyl-2-pyridinone alkaloids, 17-hydroxy-N-(O-methyl)septoriamycin A (1), 17-acetoxy-N-(O-methyl)septoriamycin A (2), 13-(S)-hydroxy-N-(O-methyl)septoriamycin A (3), and 13-(R)-hydroxy-N-(O-methyl)septoriamycin A (4), together with the known compounds (+)-cercosporin (5), (+)-14-O-acetylcercosporin (6), (+)-di-O-acetylcercosporin (7), lumichrome, and brassicasterol, were isolated from an ethyl acetate extract of a culture medium of Septoria pistaciarum. Methylation of septoriamycin A (8) with diazomethane yielded three di-O-methyl analogues, two of which existed as mixtures of rotamers. We previously reported antimalarial activity of septoriamycin A. This compound also exhibited significant activity against Leishmania donovani promastigotes. Compounds 5-7 showed moderate in vitro activity against L. donovani promastigotes and chloroquine-sensitive (D6) and -resistant (W2) strains of Plasmodium falciparum, whereas compound 5 was fairly active against methicillin-sensitive and methicillin-resistant strains of Staphylococcus aureus. Compounds 5-7 also displayed moderate phytotoxic activity against both a dicot (lettuce, Lactuca sativa) and a monocot (bentgrass, Agrostis stolonifera) and cytotoxicity against a panel of cell lines.

  DOI：

  10.1021/np200940b

文献信息

• Antiprotozoal and Antimicrobial Compounds from the Plant Pathogen <i>Septoria pistaciarum</i>
  作者：Mallika Kumarihamy、Shabana I. Khan、Melissa Jacob、Babu L. Tekwani、Stephen O. Duke、Daneel Ferreira、N. P. Dhammika Nanayakkara

  DOI：10.1021/np200940b

  日期：2012.5.25

  Four new 1,4-dihydroxy-5-phenyl-2-pyridinone alkaloids, 17-hydroxy-N-(O-methyl)septoriamycin A (1), 17-acetoxy-N-(O-methyl)septoriamycin A (2), 13-(S)-hydroxy-N-(O-methyl)septoriamycin A (3), and 13-(R)-hydroxy-N-(O-methyl)septoriamycin A (4), together with the known compounds (+)-cercosporin (5), (+)-14-O-acetylcercosporin (6), (+)-di-O-acetylcercosporin (7), lumichrome, and brassicasterol, were isolated from an ethyl acetate extract of a culture medium of Septoria pistaciarum. Methylation of septoriamycin A (8) with diazomethane yielded three di-O-methyl analogues, two of which existed as mixtures of rotamers. We previously reported antimalarial activity of septoriamycin A. This compound also exhibited significant activity against Leishmania donovani promastigotes. Compounds 5-7 showed moderate in vitro activity against L. donovani promastigotes and chloroquine-sensitive (D6) and -resistant (W2) strains of Plasmodium falciparum, whereas compound 5 was fairly active against methicillin-sensitive and methicillin-resistant strains of Staphylococcus aureus. Compounds 5-7 also displayed moderate phytotoxic activity against both a dicot (lettuce, Lactuca sativa) and a monocot (bentgrass, Agrostis stolonifera) and cytotoxicity against a panel of cell lines.