(4-碘-苯甲基)-膦酸二乙基酯 | 142877-49-4

• 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
• 中文名称: (4-碘-苯甲基)-膦酸二乙基酯
• 英文名称: myriceric acid A
• 英文别名: Myriceron caffeoyl ester；(4aS,6aR,6aR,6bR,8aR,12aR,14bS)-6a-[[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxymethyl]-2,2,6b,9,9,12a-hexamethyl-10-oxo-3,4,5,6,6a,7,8,8a,11,12,13,14b-dodecahydro-1H-picene-4a-carboxylic acid
• CAS: 142877-49-4
• 化学式: C₃₉H₅₂O₇
• 分子量: 632.838
• InChiKey: RHAKBYCTYSBWIE-QWZNMBRFSA-N

物化性质

• 沸点：
  751.4±60.0 °C(Predicted)
• 密度：
  1.24±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.7
• 重原子数：
  46
• 可旋转键数：
  6
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  121
• 氢给体数：
  3
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (4-碘-苯甲基)-膦酸二乙基酯 以 乙腈 为溶剂， 反应 6.0h， 以35%的产率得到
  参考文献：
  名称：

  Endothelin Receptor Antagonist Triterpenoid, Myriceric Acid A, Isolated from Myrica cerifera, and Structure Activity Relationships of Its Derivatives.

  摘要：

  作为第一种非肽类内皮素受体拮抗剂，新的三萜类化合物——美洲杜鹃酸A（myiceric acid A，50-235）（1）是从海梅果（Myrica cerifera）中分离得到的。美洲杜鹃酸A（1）不仅抑制了内皮素-1诱导的细胞质游离Ca<2+>浓度的增加（IC50 = 11±2 nM），还抑制了[<125&I]内皮素-1在大鼠主动脉平滑肌细胞中的结合（Ki = 66±15 nM）。此外，还分离出了两种新的相关三萜类化合物，美洲杜鹃酸C（6）和美洲杜鹃酸D（8）。进一步地，对这些天然产物的化学修饰导致合成了硫酸酯衍生物（13、14、15），其对内皮素受体的亲和力提高了1.5到20倍。讨论了美洲杜鹃酸及其衍生物的结构活性关系。

  DOI：

  10.1248/cpb.44.343
• 作为产物：
  描述：

  Myricerone 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 N,N'-羰基二咪唑 、 三氟乙酸 、 lithium chloride 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 12.5h， 生成 (4-碘-苯甲基)-膦酸二乙基酯
  参考文献：
  名称：

  Practical Partial Synthesis of Myriceric Acid A, an Endothelin Receptor Antagonist, from Oleanolic Acid

  摘要：

  Myriceric acid A (1) is an oleanane triterpene that is a potent and specific endothelin A receptor antagonist. A practical procedure for large-scale synthesis of myriceric acid A (1) has been developed starting from oleanolic acid 4. The conversion of oleanolic acid 4 to the key intermediate myricerone 3 was achieved in an efficient manner employing a photochemical reaction (the Barton reaction) of nitrite 7. Our synthetic procedure alleviated several difficulties of the original Barton's procedure with regard to yields and large-scale operation. Myricerone 3 afforded Horner-Wadsworth-Emmons (HWE) type phosphonate 2 which has proved to be a versatile precursor of 1. The preparation of phosphonate 2 on a scale of several hundred grams is described. The synthesis was completed by condensation of 2 with 3,4-bis[(diphenylmethyl)oxy]benzaldehyde (21), giving alpha,beta-unsaturated ester 22, which was deprotected to afford 1. The whole synthetic sequence is efficient (14 steps, 31% yield) and requires no chromatographic purification except to obtain the final product 1.

  DOI：

  10.1021/jo9615864

文献信息

• Practical Partial Synthesis of Myriceric Acid A, an Endothelin Receptor Antagonist, from Oleanolic Acid
  作者：Toshiro Konoike、Kazuhiro Takahashi、Yoshitaka Araki、Isao Horibe

  DOI：10.1021/jo9615864

  日期：1997.2.1

  Myriceric acid A (1) is an oleanane triterpene that is a potent and specific endothelin A receptor antagonist. A practical procedure for large-scale synthesis of myriceric acid A (1) has been developed starting from oleanolic acid 4. The conversion of oleanolic acid 4 to the key intermediate myricerone 3 was achieved in an efficient manner employing a photochemical reaction (the Barton reaction) of nitrite 7. Our synthetic procedure alleviated several difficulties of the original Barton's procedure with regard to yields and large-scale operation. Myricerone 3 afforded Horner-Wadsworth-Emmons (HWE) type phosphonate 2 which has proved to be a versatile precursor of 1. The preparation of phosphonate 2 on a scale of several hundred grams is described. The synthesis was completed by condensation of 2 with 3,4-bis[(diphenylmethyl)oxy]benzaldehyde (21), giving alpha,beta-unsaturated ester 22, which was deprotected to afford 1. The whole synthetic sequence is efficient (14 steps, 31% yield) and requires no chromatographic purification except to obtain the final product 1.
• Endothelin Receptor Antagonist Triterpenoid, Myriceric Acid A, Isolated from Myrica cerifera, and Structure Activity Relationships of Its Derivatives.
  作者：Kensuke SAKURAWI、Fumio YASUDA、Takehiko TOZYO、Miharu NAKAMURA、Tomohiro SATO、Junko KIKUCHI、Yoshihiro TERUI、Yuji IKENISHI、Tsuyoshi IWATA、Kazuhiro TAKAHASHI、Toshiro KONOIKE、Shin-ichi MIHARA、Masafumi FUJIMOTO

  DOI：10.1248/cpb.44.343

  日期：——

  As the first non-peptide endothelin receptor antagonist form a higher plant, a new triter penoid, myiceric acid A (50-235) (1) was isolated from the bayberry, Myrica cerifera. myriceric acid A (1) inhibited not only an endothelin-1-induced increase in cytosolic free Ca&glt;2+> concentration (IC50=11±2nM) but [<125&t;I]endothelin-1 binding in rat aortic smooth muscle cells (Ki=66±15nM). Two new related triterpenoids, myriceric acid C (6), and myriceric acid D (8), were also isolated. Furthermore, the chemical modification of these natural products led to the synthesis of sulfated derivative (13, 14, 15) which showed 1.5 to 20 times higher affinity for endothelin receptors. The structure activity relationships of myriceric acids and their derivatives are discussed.

  作为第一种非肽类内皮素受体拮抗剂，新的三萜类化合物——美洲杜鹃酸A（myiceric acid A，50-235）（1）是从海梅果（Myrica cerifera）中分离得到的。美洲杜鹃酸A（1）不仅抑制了内皮素-1诱导的细胞质游离Ca<2+>浓度的增加（IC50 = 11±2 nM），还抑制了[<125&I]内皮素-1在大鼠主动脉平滑肌细胞中的结合（Ki = 66±15 nM）。此外，还分离出了两种新的相关三萜类化合物，美洲杜鹃酸C（6）和美洲杜鹃酸D（8）。进一步地，对这些天然产物的化学修饰导致合成了硫酸酯衍生物（13、14、15），其对内皮素受体的亲和力提高了1.5到20倍。讨论了美洲杜鹃酸及其衍生物的结构活性关系。