3β-acetoxy-oleanadien-(11.13(18))-oic acid-(30)-methyl ester | 62422-57-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 3β-acetoxy-oleanadien-(11.13(18))-oic acid-(30)-methyl ester
• 英文别名: 3β-Acetoxy-oleanadien-(11.13(18))-saeure-(30)-methylester
• CAS: 62422-57-5
• 化学式: C₃₃H₅₀O₄
• 分子量: 510.758
• InChiKey: NZLXXADPCWIVCJ-BELHHJATSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.81
• 重原子数：
  37.0
• 可旋转键数：
  2.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  3β-acetoxy-oleanadien-(11.13(18))-oic acid-(30)-methyl ester 在 氢氧化钾 作用下， 生成 3β-Hydroxyolean-11,13(18)-dien-30-oic acid
  参考文献：
  名称：

  104.皂苷元。第十五部分。硅酸水杨酸

  摘要：

  DOI：

  10.1039/jr9420000540
• 作为产物：
  描述：

  11-deoxoglycyrrhetic acid methyl ester acetate 在 selenium(IV) oxide 、 溶剂黄146 作用下， 生成 3β-acetoxy-oleanadien-(11.13(18))-oic acid-(30)-methyl ester
  参考文献：
  名称：

  Fire blight of pears in Israel: infection, prevalence, intensity and efficacy of management actions

  摘要：

  The Pear production area in Israel is 1500 ha, most of which (ca 1200 ha) is located in the northern part of the country. Fire blight (caused by the bacterium Erwinia amylovora (Burrill) Winslow et al.) was first observed in Israel in that region (in 1985) and the disease has prevailed there since then. In a comprehensive survey conducted in Israel in 1996-1999, data were collected and observations were made yearly in one-third to one-half of the pear production area. The aim was to document the prevalence and intensity of fire blight in commercial orchards and to use the data to evaluate the efficacy of management measures employed for its suppression, Regionwise, a severe fire blight epidemic developed in 1996, moderate epidemics developed in 1998 and 1999, and a mild epidemic developed in 1997. The intensity of fire blight in the preceding season in a specific orchard was more influential on current season severity in a season with a mild epidemic than in a season with a moderate epidemic. Analysis of disease onset records and weather data revealed that only a few (1-3) infection episodes occurred in individual orchards each year. Comparison of fire blight intensity in orchard-plots treated before green tip with copper hydroxide with nontreated plots revealed that the treatment had no effect on disease intensity during bloom. The efficacy of bactericide sprays applied during bloom was not related to the number of sprays applied but to the timing of spraying. Adequate control was achieved in orchard-plots sprayed soon before or after the occurrence of infection episodes.

  DOI：

  10.1007/bf02981831

文献信息

• Endophytic fungi and ergot alkaloids in native Turkish grasses
  作者：B. Tunali、R. A. Shelby、G. Morgan-Jones、M. Kodan

  DOI：10.1007/bf02981832

  日期：2000.12

  of native grasses were collected in the Ankara province of Turkey. Microscopic examination of individual seeds revealed the presence of endophytic fungi in four seed samples, The endophytes were isolated in pure culture and identified. Seeds were also ground and subjected to ELISA and HPLC analyses to confirm the levels of ergot alkaloids typically produced by endophytic fungi of grasses.

  在土耳其的安卡拉省收集了 10 个原生草属的 76 个样品的成熟花序。单个种子的显微镜检查显示在四个种子样品中存在内生真菌。在纯培养物中分离并鉴定内生真菌。种子也被磨碎并进行 ELISA 和 HPLC 分析，以确认通常由草内生真菌产生的麦角生物碱的水平。
• Rozen,S. et al., Israel Journal of Chemistry, 1975, vol. 13, p. 234 - 246
  作者：Rozen,S. et al.

  DOI：——

  日期：——
• Zur Kenntnis der Triterpene. (90. Mitteilung). �ber ein Oxydationsprodukt C32H46O5 aus Acetyl-?-amyrin und zwei isomere Oxydationsprodukte C33H46O7 aus Acetyl-oleanols�uremethylester und Acetyl-glycyrrhetins�ure-methylester
  作者：O. Jeger、J. Norymberski、L. Ruzicka

  DOI：10.1002/hlca.194402701195

  日期：——