3β-acetoxy-urs-9(11)-en-12-one | 124107-34-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3β-acetoxy-urs-9(11)-en-12-one
• 英文别名: 3β-Acetoxy-urs-9(11)-en-12-on；3β-Acetoxy-ursen-(9(11))-on-(12)
• CAS: 124107-34-2
• 化学式: C₃₂H₅₀O₃
• 分子量: 482.747
• InChiKey: REVFIJMZJLLUAQ-VXQJIVHJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.77
• 重原子数：
  35.0
• 可旋转键数：
  1.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  43.37
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  3β-acetoxy-urs-9(11)-en-12-one 在 氨 、 lithium 作用下， 生成 12-Keto-α-amyrin-acetat
  参考文献：
  名称：

  Fall, classification and cosmogenic records of the Sabrum (LL6) chondrite

  摘要：

  Abstract— The petrographic and chemical characteristics of a fresh Indian meteorite fall at Sabrum are described. Its mean mineral composition is defined by olivine (Fa31.4), orthopyroxene (Fs25.1,Wo2.0), clinopyroxene (Wo45En45.6Fs9.4) and plagioclase (An10.6Ab83.6Or5.8). The meteorite shows moderate shock features, which indicate that it belongs to the S4 category. Based on mineralogical and chemical criteria the meteorite is classified as an LL6 brecciated veined chondrite. Several cosmogenic radioisotopes (46Sc, 7Be, 54Mn, 22Na and 26Al), noble gas (He, Ne, Ar, Kr and Xe), nitrogen isotopes, and particle tracks density have been measured. Concentrations of cosmogenic 21Ne and 38Ar indicate that its cosmic‐ray exposure age is 24.8 Ma. Small amounts of trapped Kr and Xe, consistent with petrologic class 5/6, are present. The track density in olivines is found to be (1.3 ± 0.3) × 106/cm2. Activities of most of the short‐lived isotopes are lower than those expected from solar cycle variation. 22Na/26Al (1.12 ± 0.02) is found to be significantly anomalous, being ˜25% lower than expected from the Climax neutron monitor data. These results indicate that the cosmic‐ray flux during the terminal segment of the meteoroid orbit was low. The activities of 26Al and 60Co and the track density indicate small meteoroid size with a radius ˜15 cm.

  DOI：

  10.1111/j.1945-5100.2002.tb00826.x
• 作为产物：
  描述：

  12-Keto-α-amyrin-acetat 在 溴 作用下， 生成 3β-acetoxy-urs-9(11)-en-12-one
  参考文献：
  名称：

  210.三萜烯树脂醇和相关酸。第XX部分。α-amyrin转化为异-α-amrananone（12-ketoursane）

  摘要：

  DOI：

  10.1039/jr9510000935

文献信息

• 45. The resinols. Part IV. The structure of α-amyrenol
  作者：F. S. Spring、T. Vickerstaff

  DOI：10.1039/jr9370000249

  日期：——
• 240. Triterpene resinols and related acids. Part XXI. iso-α-Amyrenonol-<scp>II</scp>
  作者：John McLean、S. U. Ruff、F. S. Spring

  DOI：10.1039/jr9510001093

  日期：——
• Zur Kenntnis der Triterpene. (112. Mitteilung). Eine neue Ringöffnung in der α-Amyrin-Reihe
  作者：L. Ruzicka、R. Rüegg、E. Volli、O. Jeger

  DOI：10.1002/hlca.19470300117

  日期：1947.2.1
• McLean; Silvertone; Spring, Journal of the Chemical Society, 1051 935,937
  作者：McLean、Silvertone、Spring

  DOI：——

  日期：——
• Triterpenoids. Part XXXV. The reactions of 12-oxoisoursa-9(11): 14-dien-3β-yl acetate
  作者：J. Douglas Easton、F. S. Spring

  DOI：10.1039/jr9550002120

  日期：——