vicenilactam | 213328-88-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 甲亚胺酸及其衍生物
• 英文名称: vicenilactam
• 英文别名: (3E,5E,7S,8S,10E,13E,15E,19S)-8-hydroxy-7,11,13,19-tetramethyl-1-azacycloicosa-3,5,10,13,15-pentaen-2-one
• CAS: 213328-88-2
• 化学式: C₂₃H₃₅NO₂
• 分子量: 357.536
• InChiKey: LHBMGWHGMXXASO-IPVDBYQFSA-N

物化性质

• 沸点：
  552.8±50.0 °C(Predicted)
• 密度：
  0.924±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  26
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.52
• 拓扑面积：
  49.3
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  vicenilactam 在 氢氧化钾 、 三羟甲基氨基甲烷盐酸盐 作用下， 以 甲醇 、 二甲基亚砜 为溶剂， 反应 16.7h， 生成 neovicenistatin
  参考文献：
  名称：

  Enzymatic Approach to Unnatural Glycosides with Diverse Aglycon Scaffolds Using Glycosyltransferase VinC

  摘要：

  Glycosyltransferase VinC was explored for a construction of glycoside libraries using dTDP-vicenisamine and structurally unrelated unnatural aglycons, and new unnatural vicenisaminides were successfully constructed. Structural elements of aglycon recognition by VinC were proposed by modeling studies and were confirmed by the success of transglycosylation upon a designed aglycon.

  DOI：

  10.1021/ja042848j
• 作为产物：
  描述：

  2-cyclopropylpent-4-yn-2-ol 在 四(三苯基膦)钯 、 二氯二茂锆 咪唑 、 potassium cyanide 、 sodium hydroxide 、 sodium chlorite 、 sodium dihydrogenphosphate 、 锂硼氢 、 2-甲基-2-丁烯 、 草酰氯 、 1,3-二甲基巴比妥酸 、 氰基磷酸二乙酯 、 叠氮磷酸二苯酯 、 四丁基氟化铵 、 氢溴酸 、 4-甲基苯磺酸吡啶 、 戴斯-马丁氧化剂 、 氟化氢吡啶 、 溶剂黄146 、 二甲基亚砜 、 三乙胺 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 、 叔丁醇 、 苯 为溶剂， 反应 303.42h， 生成 vicenilactam
  参考文献：
  名称：

  Enantioselective total synthesis of vicenistatin, a novel 20-membered macrocyclic lactam antitumor antibiotic

  摘要：

  已完成抗肿瘤抗生素维西尼斯汀的enantioselective全合成，该化合物具有一个包含氨基糖维西尼莎胺的20元大环内酯糖苷。在合成大环内酯非糖苷的关键反应中，涉及了铃木交叉偶联反应和埃文斯不对称 aldol 反应。O-TMS-非糖苷与适当保护的1-O-乙酰氨基糖的倒数第二步糖苷化和最后的去保护，实现了全合成。

  DOI：

  10.1039/b111146a

文献信息

• Synthesis and Structure-Activity Relationship of Vicenistatin, a Cytotoxic 20-Membered Macrolactam Glycoside
  作者：Hayato Fukuda、Yuko Nishiyama、Shiina Nakamura、Yutaro Ohno、Tadashi Eguchi、Yoshiharu Iwabuchi、Takeo Usui、Naoki Kanoh

  DOI：10.1002/asia.201200615

  日期：2012.12

  generate the desired 20‐membered macrolactam. This second‐generation strategy made it possible to prepare synthetic analogues of vicenistatin, including the C20‐ and/or C23‐demethyl analogues. Evaluation of the cytotoxic effect of these analogues indicated the importance of the fixed conformation of aglycon for determining the biological activity of the vicenistatins.

  我们已经开发了维斯他汀及其类似物的两种合成物。我们的第一代策略包括通过在C3–C13片段与C1–C2，C14–C19片段之间进行分子间的Horner–Wadsworth–Emmons反应，快速顺序地组装大环内酰胺，然后进行分子内Stille偶联反应。第二代策略利用己烯中间体的闭环复分解反应生成所需的20元大环内酰胺。第二代策略使制备维斯他汀的合成类似物成为可能，包括C20-和/或C23-去甲基类似物。对这些类似物的细胞毒性作用的评估表明，糖苷配基的固定构象对于测定反尼他汀的生物活性很重要。
• Isolation and Structure Elucidation of Vicenistatin M, and Importance of the Vicenisamine Aminosugar for Exerting Cytotoxicity of Vicenistatin.
  作者：YOSHITAKA MATSUSHIMA、TAKUYA NAKAYAMA、MASAKI FUJITA、RENUKA BHANDARI、TADASHI EGUCHI、KAZUTOSHI SHINDO、KATSUMI KAKINUMA

  DOI：10.7164/antibiotics.54.211

  日期：——

  A new analogue of Vicenistatin was isolated from the producing strain Streptomyces sp. HC-34. A characteristic of the elucidated structure involved the existence of a neutral sugar mycarose instead of an aminosugar vicenisamine of Vicenistatin. The absolute stereochemistry of the new analogue (named as Vicenistatin M) was determined by the synthesis of D-mycarose and of vicenistatin M itself. Biological testing of Vicenistatin M suggested the importance of vicenisamine for exerting the cytotoxicity of vicenistatin.

  从生产菌株链霉菌属（Streptomyces sp.）HC-34中分离出一种新的维西尼司他汀类似物。已阐明结构的一个特征是存在一种中性糖麦芽糖，而不是维西尼司他汀的氨基糖维西尼司他胺。通过合成D-麦芽糖和维西尼司他汀M本身，确定了新类似物（命名为维西尼司他汀M）的绝对立体化学结构。维西尼司他汀M的生物学测试表明，维西尼司他胺对于发挥维西尼司他汀的细胞毒性至关重要。
• Macrolactam formation catalyzed by the thioesterase domain of vicenistatin polyketide synthase
  作者：Fumitaka Kudo、Takashi Kitayama、Katsumi Kakinuma、Tadashi Eguchi

  DOI：10.1016/j.tetlet.2006.01.008

  日期：2006.3

  The excited thioesterase (TE) domain from the vicenistatin polyketide synthase (PKS) efficiently catalyzed the macrolactam formation of the N-acetylcysteamine thioester of the seco-amino acid of the aglycon vicenilactam. This result indicates that the vicenistatin PKS TE domain cyclizes the extended polyketide chain on the ACP domain in the PKS. Furthermore, the simple ethyl ester of the seco-amino

  从vicenistatin聚酮化合物合酶（PKS）激发的硫酯酶（TE）域有效地催化的大环内酰胺形成Ñ所述的硫酯-acetylcysteamine山高的糖苷配基的vicenilactamα-氨基酸。该结果表明，抑素蛋白PKS TE结构域环化了PKS中ACP结构域上的延伸的聚酮链。此外，简单乙酯开环α-氨基酸也被发现可以用作具有相似的效率的TE域的基板。
• Substrate Flexibility of Vicenisaminyltransferase VinC Involved in the Biosynthesis of Vicenistatin
  作者：Atsushi Minami、Tadashi Eguchi

  DOI：10.1021/ja0685250

  日期：2007.4.1

  A glycosyltransferase VinC is involved in the biosynthesis of antitumor beta-glycoside antibiotic vicenistatin. It catalyzes a glycosyl transfer reaction between dTDP-alpha-D-vicenisamine and vicenilactam. Previous identification of its broad substrate specificity toward various glycosyl acceptors enabled us to explore the potential of VinC for glycodiversification. In vitro study of the substrate specificity toward several dTDP-sugars with vicenilactam established that VinC displayed activities with alpha-anomers of several dTDP-2-deoxy-D-sugars such as mycarose, digitoxose, olivose, and 2-deoxyglucose to afford respective beta-glycosides. Notably, beta-anomers of dTDP-2-deoxy-D-sugars also appeared to be accepted by VinC to form alpha-glycosides. Furthermore, VinC is capable of catalyzing glycosyl transfer reactions from both the alpha-anomer and beta-anomer of dTDP-L-mycarose, respectively, into beta-glycoside and alpha-glycoside. These results indicate that VinC is a unique glycosyltransferase possessing broad substrate specificity. The mechanism of this axially oriented glycosidic bond formation from the equatorially oriented dTDP-sugar might be explained by conformational change of dTDP-sugar to a boat conformation during the glycosyl transfer reaction. To apply these features of VinC for glycodiversification, 22 sets of structurally diverse glycosides were constructed using unnatural glycosyl donors and acceptors.
• Aglycon switch approach toward unnatural glycosides from natural glycoside with glycosyltransferase VinC
  作者：Atsushi Minami、Katsumi Kakinuma、Tadashi Eguchi

  DOI：10.1016/j.tetlet.2005.07.083

  日期：2005.9

  New aglycon switch approach using glycosyltransferase VinC was explored to create unnatural glycosides from natural glycoside in one-pot reaction. This aglycon switch comprises from two reactions, where NDP-vicenisamine generated in situ from natural glycoside vicenistatin and NDP by the reverse reaction is transferred to the targeted additional aglycons to form unnatural vicenisaminides by the forward reaction. (c) 2005 Elsevier Ltd. All rights reserved.