veraguamide A | 1295576-45-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 肽模拟物
• 英文名称: veraguamide A
• 英文别名: (3S,6S,9S,12S,13R,16S,19S)-13-(5-bromopent-4-ynyl)-3-[(2S)-butan-2-yl]-7,12,17-trimethyl-6,9,16-tri(propan-2-yl)-4,14-dioxa-1,7,10,17-tetrazabicyclo[17.3.0]docosane-2,5,8,11,15,18-hexone
• CAS: 1295576-45-2
• 化学式: C₃₇H₅₉BrN₄O₈
• 分子量: 767.801
• InChiKey: WWYBIFCBAWCPFI-AVCHBABLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7
• 重原子数：
  50
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  143
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  veraguamide A 在 三乙胺 、 potassium hydroxide 作用下， 以 氘代氯仿 为溶剂， 反应 48.0h， 生成 methyl (2S)-2-[[(2S)-2-[[(2S,3R)-8-bromo-2-methyl-3-[(2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl]oxyoct-7-ynoyl]amino]-3-methylbutanoyl]-methylamino]-3-methylbutanoate
  参考文献：
  名称：

  Veraguamides A−G, Cyclic Hexadepsipeptides from a Dolastatin 16-Producing Cyanobacterium Symploca cf. hydnoides from Guam

  摘要：

  Cytotoxicity-directed purification of a Symploca cf. hydnoides sample from Cetti Bay, Guam, afforded seven new cyclic depsipeptides, veraguamides A-G (1-7), together with the known compound dolastatin 16. The planar structures of 1-7 were elucidated using NMR and MS experiments, while enantioselective HPLC and Mosher's analysis of acid and base hydrolysates, respectively, were utilized to assign the absolute configurations of the stereocenters. Veraguamides A-G (1-7) are characterized by the presence of an invariant proline residue, multiple N-methylated amino acids, an alpha-hydroxy acid, and a C(8)-polyketide-derived beta-hydroxy acid moiety with a characteristic terminus as either an alkynyl bromide, alkyne, or vinyl group. These compounds and a semisynthetic analogue (8) showed moderate to weak cytotoxic activity against HT29 colorectal adenocarcinoma and HeLa cervical carcinoma cell lines. Preliminary structure-activity relationship analysis identified several sensitive positions in the veraguamide scaffold that affect the cytotoxic activity of this compound class. Dolastatin 16 showed only weak cytotoxic activity on both cell lines tested. The complete stereostructure of dolastatin 16 was proposed for the first time through degradation followed by a combination of advanced Marfey's analysis and modified Mosher's analysis using phenylglycine methyl ester as a chiral anisotropic reagent.

  DOI：

  10.1021/np200076t
• 作为产物：
  描述：

  L-异亮氨酸 在 4-苯基吡啶 、 四(三苯基膦)钯 、 N-羟基-7-氮杂苯并三氮唑 、 硫酸 、 四丁基溴化铵 、 水 、 potassium carbonate 、 二乙胺 、 N,N-二异丙基乙胺 、 N,N'-二环己基碳二亚胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 、 三氟乙酸 、 sodium nitrite 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 144.25h， 生成 veraguamide A
  参考文献：
  名称：

  环状六肽维拉酰胺A †的拟议结构的全合成

  摘要：

  我们已经开发出一种实用的方法，可通过首先准备三个关键片段，然后优化大环化位点来组装天然产物维拉瓜酰胺A（1）的拟议结构。尽管合成产物的旋光性与天然产物相似，但在1 H和13 C NMR光谱中观察到显着差异，尤其是两个N -MeVal部分的质子和碳信号。

  DOI：

  10.1039/c2ob26002f

文献信息

• Total synthesis of the proposed structure of cyclic hexadepsipeptide veraguamide A
  作者：Dongyu Wang、Xian Jia、Ao Zhang

  DOI：10.1039/c2ob26002f

  日期：——

  We have developed a practical method to assemble the proposed structure of natural product veraguamide A (1) by first preparing the three key fragments followed by optimization of the macrocyclization site. Although the synthetic product gave similar optical rotation to that reported for natural product, significant differences in the 1H and 13C NMR spectra were observed, especially the proton and

  我们已经开发出一种实用的方法，可通过首先准备三个关键片段，然后优化大环化位点来组装天然产物维拉瓜酰胺A（1）的拟议结构。尽管合成产物的旋光性与天然产物相似，但在1 H和13 C NMR光谱中观察到显着差异，尤其是两个N -MeVal部分的质子和碳信号。
• Veraguamides A−G, Cyclic Hexadepsipeptides from a Dolastatin 16-Producing Cyanobacterium <i>Symploca</i> cf. <i>hydnoides</i> from Guam
  作者：Lilibeth A. Salvador、Jason S. Biggs、Valerie J. Paul、Hendrik Luesch

  DOI：10.1021/np200076t

  日期：2011.5.27

  Cytotoxicity-directed purification of a Symploca cf. hydnoides sample from Cetti Bay, Guam, afforded seven new cyclic depsipeptides, veraguamides A-G (1-7), together with the known compound dolastatin 16. The planar structures of 1-7 were elucidated using NMR and MS experiments, while enantioselective HPLC and Mosher's analysis of acid and base hydrolysates, respectively, were utilized to assign the absolute configurations of the stereocenters. Veraguamides A-G (1-7) are characterized by the presence of an invariant proline residue, multiple N-methylated amino acids, an alpha-hydroxy acid, and a C(8)-polyketide-derived beta-hydroxy acid moiety with a characteristic terminus as either an alkynyl bromide, alkyne, or vinyl group. These compounds and a semisynthetic analogue (8) showed moderate to weak cytotoxic activity against HT29 colorectal adenocarcinoma and HeLa cervical carcinoma cell lines. Preliminary structure-activity relationship analysis identified several sensitive positions in the veraguamide scaffold that affect the cytotoxic activity of this compound class. Dolastatin 16 showed only weak cytotoxic activity on both cell lines tested. The complete stereostructure of dolastatin 16 was proposed for the first time through degradation followed by a combination of advanced Marfey's analysis and modified Mosher's analysis using phenylglycine methyl ester as a chiral anisotropic reagent.