(5aS,6aR,11aS,13aS)-6a-(2-methylbut-3-en-2-yl)-1,2,3,6,6a,11,11a,13a-octahydro-13H-pyrrolo[1'',2'':4',5']pyrazino[1',2':1,5]pyrrolo[2,3-b]indole-5,13(5aH)-dione | 1258943-32-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (5aS,6aR,11aS,13aS)-6a-(2-methylbut-3-en-2-yl)-1,2,3,6,6a,11,11a,13a-octahydro-13H-pyrrolo[1'',2'':4',5']pyrazino[1',2':1,5]pyrrolo[2,3-b]indole-5,13(5aH)-dione
• CAS: 1258943-32-6
• 化学式: C₂₁H₂₅N₃O₂
• 分子量: 351.448
• InChiKey: JSYABZYNWJHOBW-ZFDALGJYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.49
• 重原子数：
  26.0
• 可旋转键数：
  2.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.52
• 拓扑面积：
  52.65
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  (3S,8aS)-3-(1H-吲哚-3-基甲基)-2,3,6,7,8,8a-六氢吡咯并[2,1-f]吡嗪-1,4-二酮 在 fungal indole prenyltransferase FtmPT₁ G₁₁₅T mutant 作用下， 生成 (5aS,6aR,11aS,13aS)-6a-(2-methylbut-3-en-2-yl)-1,2,3,6,6a,11,11a,13a-octahydro-13H-pyrrolo[1'',2'':4',5']pyrazino[1',2':1,5]pyrrolo[2,3-b]indole-5,13(5aH)-dione
  参考文献：
  名称：

  Structure−Function Analysis of an Enzymatic Prenyl Transfer Reaction Identifies a Reaction Chamber with Modifiable Specificity

  摘要：

  Fungal indole prenyltransferases participate in a multitude of biosynthetic pathways. Their ability to prenylate diverse substrates has attracted interest for potential use in chemoenzymatic synthesis. The fungal indole prenyltransferase FtmPT1 catalyzes the prenylation of brevianamide F in the biosynthesis of fumitremorgin-type alkaloids, which show diverse pharmacological activities and are promising candidates for the development of antitumor agents. Here, we report crystal structures of unliganded Aspergillus fumigatus FtmPT1 as well as of a ternary complex of FtmPT1 bound to brevianamide F and an analogue of its isoprenoid substrate dimethylallyl diphosphate. FtmPT1 assumes a rare alpha/beta-barrel fold, consisting of 10 circularly arranged beta-strands surrounded by alpha-helices. Catalysis is performed in a hydrophobic reaction chamber at the center of the barrel. In combination with mutagenesis experiments, our analysis of the liganded and unliganded structures provides insight into the mechanism of catalysis and the determinants of regiospecificity. Sequence conservation of key features indicates that all fungal indole prenyltransferases possess similar active site architectures. However, while the dimethylallyl diphosphate binding site is strictly conserved in these enzymes, subtle changes in the reaction chamber likely allow for the accommodation of diverse aromatic substrates for prenylation. In support of this concept, we were able to redirect the regioselectivity of FtmPT1 by a single mutation of glycine 115 to threonine. This finding provides support for a potential use of fungal indole prenyltransferases as modifiable bioreactors that can be engineered to catalyze highly specific prenyl transfer reactions.

  DOI：

  10.1021/ja106817c

文献信息

• Diastereodivergent Reverse Prenylation of Indole and Tryptophan Derivatives: Total Synthesis of Amauromine, Novoamauromine, and <i>epi</i> -Amauromine
  作者：Jonas M. Müller、Christian B. W. Stark

  DOI：10.1002/anie.201509468

  日期：2016.4.4

  A regio‐ and stereoselective reverse prenylation of indole and tryptophan derivatives is presented. All four possible stereoisomers are accessible through this iridium‐catalyzed reaction. The stereoselectivity is controlled by a chiral phosphoramidite ligand in combination with an achiral borane additive and can be switched by changing the nature of the borane. One enantiomer of the ligand is thus

  提出了吲哚和色氨酸衍生物的区域和立体选择性反向异戊烯化作用。通过这种铱催化的反应可以得到所有四种可能的立体异构体。立体选择性由手性亚磷酰胺配体与非手性硼烷添加剂结合控制，并且可以通过改变硼烷的性质进行切换。因此，配体的一种对映体足以制备所有可能的异构体。该方法的合成潜力通过金毛胺及其两种天然非对映异构体的短时全合成得到证明。
• Switching a regular tryptophan <i>C4</i>-prenyltransferase to a reverse tryptophan-containing cyclic dipeptide <i>C3</i>-prenyltransferase by sequential site-directed mutagenesis
  作者：Liujuan Zheng、Peter Mai、Aili Fan、Shu-Ming Li

  DOI：10.1039/c8ob01735b

  日期：——

  FgaPT2 from Aspergillus fumigatus catalyzes a regular C4- and its mutant K174A a reverse C3-prenylation of L-tryptophan in the presence of dimethylallyl diphosphate. FgaPT2 also uses tryptophan-containing cyclic dipeptides for C4-prenylation, while FgaPT2_K174A showed almost no activity toward these substrates. In contrast, Arg244 mutants of FgaPT2 accept very well cyclic dipeptides for regular C4-prenylation

  在二磷酸二甲基烯丙酯的存在下，烟曲霉的FgaPT2催化了常规的C4-及其突变体K174A的L-色氨酸的反向C3-异戊二烯化。FgaPT2还使用含色氨酸的环状二肽进行C4-异戊二烯化，而FgaPT2_K174A对这些底物几乎没有活性。相反，FgaPT2的Arg244突变体接受非常好的环状二肽以进行规则的C4-异戊二烯化。在这项研究中，我们证明了FgaPT2_K174F，催化定期C3酪氨酸-prenylation，也可以使用环-大号-Trp-大号-Ala，环-大号-Trp-大号-Trp，环-大号-Trp -甘氨酸，环-大号-Trp-大号-Phe，环-大号-Trp-大号-Pro，和环-大号-Trp-大号-Tyr作为底物，但仅活动少。Lys174和Arg244的组合突变显着提高了对这些环状二肽的接受度。除了cyclo - L -Trp- L-Trp，FgaPT2_K174F_R244X（X = L