cyclo(L-Ile-L-Pro)

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: cyclo(L-Ile-L-Pro)
• 英文别名: cyclo-(Pro-Ile)；cyclo-L-Pro-L-Ile；cyclo(S-Pro-S-Ile)；Cyclo(L-Pro-L-Ile)；(3S,8aS)-3-[(2S)-butan-2-yl]-2,3,6,7,8,8a-hexahydropyrrolo[1,2-a]pyrazine-1,4-dione
• 化学式: C₁₁H₁₈N₂O₂
• 分子量: 210.276
• InChiKey: ZDACRNZBFJOLTC-CIUDSAMLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  49.4
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  cyclo(L-Ile-L-Pro) 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 以75%的产率得到(3S,8aS)-3-sec-butyloctahydropyrrolo[1,2-a]pyrazine
  参考文献：
  名称：

  C 2对称手性二胺-铜（II）配合物 催化对映选择性亨利反应†

  摘要：

  事实证明，C 2对称二胺的铜（II）络合物是硝基链烷烃与各种醛之间对映选择性亨利反应的有效催化剂，以高产率（高达97％），中等非对映选择性（高达90％以上）提供β-羟基硝基链烷烃。至71:29）和出色的对映体过量（高达96％）。所获得的手性硝基醛醇加合物在几个步骤中已进一步转化为手性氮丙啶。

  DOI：

  10.1039/b904254g
• 作为产物：
  描述：

  L-异亮氨酸 在 palladium on activated charcoal 氯化亚砜 、 potassium carbonate 、 环己烯 作用下， 以 甲醇 、 二氯甲烷 、 乙二醇 为溶剂， 反应 17.5h， 生成 cyclo(L-Ile-L-Pro)
  参考文献：
  名称：

  Jhaumeer-Laulloo; Khodabocus; Jugoo, Journal of the Indian Chemical Society, 2003, vol. 80, # 8, p. 765 - 768

  摘要：

  DOI：

文献信息

• Streptopyrazinones A−D, rare metabolites from marine-derived Streptomyces sp. ZZ446
  作者：Mengxuan Chen、Weiyun Chai、Rongyao Zhu、Tengfei Song、Zhizhen Zhang、Xiao-Yuan Lian

  DOI：10.1016/j.tet.2018.03.028

  日期：2018.4

  Secondary metabolites from marine-associated actinomycetes are important source for the discovery of novel bioactive compounds. In this study, an actinomycete Streptomyces sp. ZZ446 was isolated from coastal soils and different media were used to culture this isolated marine actinomycete. It has been found that this actinomycete in the liquid medium of 2216 E with sea salt produced five new compounds of streptopyrazinones

  来自海洋相关放线菌的次生代谢产物是发现新型生物活性化合物的重要来源。在这项研究中，放线菌Streptomyces sp。ZZ446是从沿海土壤中分离出来的，使用不同的培养基来培养这种分离的海洋放线菌。已经发现，该放线菌在2216ë海盐的液体培养基中生产streptopyrazinones五个新化合物A-d（1 - 4）和Ñ乙酰基升-isoleucine-升-leucinamide（5）以及6个已知的二酮哌嗪（6 – 11）和一种生物碱（12）。通过广泛的NMR分析，HRESIMS数据，电子圆二色性（ECD）计算，化学降解，Marfey方法和X射线衍射分析确定了新化合物的结构。这种类型streptopyrazinones A-d（的1 - 4）在自然资源，很难找到。新的化合物1 - 5抑制生长显示活性白色念珠菌和耐甲氧西林金黄色葡萄球菌。
• Molecular Capture and Conformational Change of Diketopiperazines Containing Proline Residues by Epigallocatechin-3-<i>O</i>-gallate in Water
  作者：Takashi Ishizu、Miku Tokunaga、Moeka Fukuda、Mana Matsumoto、Takeshi Goromaru、Soushi Takemoto

  DOI：10.1248/cpb.c21-00047

  日期：2021.6.1

  hydrophobicity of the side chain of the amino acid residue of cyclo(Pro-Xxx) led to a higher molecular capture ability. Furthermore, the molecular capture ability decreased when the side chain of the amino acid residue had a hydrophilic hydroxyl group. When diketopiperazine cyclo(Pro-Xxx), excluding cyclo(D-Pro-L-Ala), was taken into the hydrophobic space formed by the three aromatic A, B, and B′ rings of EGCg

  将二酮哌嗪环（Pro-Xxx）（Xxx：氨基酸残基）的水溶液添加到（-）-表没食子儿茶素-3- O的水溶液中-gallate (EGCg) 导致 EGCg 和环 (Pro-Xxx) 的复合物沉淀。使用 EGCg 的环 (Pro-Xxx) 的分子捕获能力通过与 EGCg 复合物的沉淀物中包含的环 (Pro-Xxx) 的量与所用的总环 (Pro-Xxx) 的量之比来评估。cyclo(Pro-Xxx) 氨基酸残基侧链的更强疏水性导致更高的分子捕获能力。此外，当氨基酸残基的侧链具有亲水性羟基时，分子捕获能力降低。当不包括环(D-Pro-L-Ala)的二酮哌嗪环(Pro-Xxx)被带入EGCg的三个芳香A、B和B'环形成的疏水空间中，形成复合物时，它们的构象保持在疏水空间中。基于核奥弗豪泽效应 (NOE) 测量，2 O 是轴向的，而环（L-Pro-L-Ala）是赤道的。当环(D-Pro-L-Ala)
• An efficient green synthesis of proline-based cyclic dipeptides under water-mediated catalyst-free conditions
  作者：Habeebullah Thajudeen、Kyungseok Park、Surk-Sik Moon、In Seok Hong

  DOI：10.1016/j.tetlet.2009.12.134

  日期：2010.3

  L-Proline-based cyclic dipeptides were synthesized from N-Boc-protected dipeptide methyl esters under catalyst-free condition using water as a solvent. One-pot deprotection and cyclization have been used is the key steps, providing an efficient and environmentally friendly approach. Clean reaction conditions, easy isolation, and good yields of cyclic dipeptides are the salient features of the proposed methodology (C) 2010 Elsevier Ltd All rights reserved.
• Structures, Sensory Activity, and Dose/Response Functions of 2,5-Diketopiperazines in Roasted Cocoa Nibs (<i>Theobroma cacao</i>)
  作者：Timo Stark、Thomas Hofmann

  DOI：10.1021/jf051313m

  日期：2005.9.1

  The taste compounds inducing the blood-like, metallic bitter taste sensation reported recently for a dichloromethane extract prepared from roasted cocoa nibs were identified as a series of 25 diketopiperazines by means of HPLC degustation, LC-MS/MS, and independent synthesis. Among these 25 compounds, 13 cis-configured diketopiperazines, namely, CYCIO(L-IIe-L-Phe), CYCIO(L-Val-L-Leu), CYCIO(L-Pro-L-Pro), CYCIO(L-IIe-L-Pro), CYCIO(L-Val-L-Tyr), CYCIO(L-Ala-L-Tyr), CYCIO(L-Phe-L-Ser), CYCIO(L-Ala-L-IIe), CYCIO(L-LeU-L-Phe), cyclo(L-Pro-L-Val), CYCIO(L-Pro-L-Thr), CYCIO(L-PrO-L-Tyr), and CYCIO(L-Val-L-Val) were identified for the first time in cocoa. In addition, the taste recognition thresholds for the metallic as well as the bitter taste of the diketopiperazines were determined, and after quantitative analysis by using two diastereomeric diketopiperazines as the internal standards, the sensory impact of the diketopiperazines was evaluated on the basis of their close-over-threshold (DoT) factors calculated as the ratio of the concentration and the threshold concentration of a compound. These data revealed DoT factors above 1.0 exclusively for cis-cyclo(L-Pro-L-Val), cis-cyclo(L-Val-L-Leu), cis-cyclo(L-Ala-L-IIe), cis-cyclo(L-Ala-L-Leu), and cis-cyclo(L-IIe-L-Pro), whereas all of the other diketopiperazines were present below their individual bitter taste threshold concentrations and should therefore not contribute to the cocoa taste. Because the DoT factors do not consider the nonlinear relationship between the concentration and gustatory response of an individual compound, we, for the first time, report on the recording of dose/response functions describing the human bitter taste perception of diketopiperazines more precisely.
• Jhaumeer-Laulloo; Khodabocus; Jugoo, Journal of the Indian Chemical Society, 2003, vol. 80, # 8, p. 765 - 768
  作者：Jhaumeer-Laulloo、Khodabocus、Jugoo、Jheengut、Sobha

  DOI：——

  日期：——