di-tert-butyl ((2R,2'R)-disulfanediylbis(3-(but-3-yn-1-ylamino)-3-oxopropane-1,2-diyl))dicarbamate | 1619906-29-4

• 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: di-tert-butyl ((2R,2'R)-disulfanediylbis(3-(but-3-yn-1-ylamino)-3-oxopropane-1,2-diyl))dicarbamate
• CAS: 1619906-29-4
• 化学式: C₂₄H₃₈N₄O₆S₂
• 分子量: 542.721
• InChiKey: OTVSBRDVFUTGAJ-ROUUACIJSA-N

物化性质

• 沸点：
  759.7±60.0 °C(predicted)
• 密度：
  1.186±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.43
• 重原子数：
  36.0
• 可旋转键数：
  13.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  134.86
• 氢给体数：
  4.0
• 氢受体数：
  8.0

反应信息

• 作为反应物：
  描述：

  di-tert-butyl ((2R,2'R)-disulfanediylbis(3-(but-3-yn-1-ylamino)-3-oxopropane-1,2-diyl))dicarbamate 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以95%的产率得到
  参考文献：
  名称：

  Mechanistic Studies on the Substrate-Tolerant Lanthipeptide Synthetase ProcM

  摘要：

  Lanthipeptides are a class of post-translationally modified peptide natural products. They contain lanthionine (Lan) and methyllanthionine (MeLan) residues, which generate cross-links and endow the peptides with various biological activities. The mechanism of a highly substrate-tolerant lanthipeptide synthetase, ProcM, was investigated herein. We report a hybrid ligation strategy to prepare a series of substrate analogues designed to address a number of mechanistic questions regarding catalysis by ProcM. The method utilizes expressed protein ligation to generate a C-terminal thioester of the leader peptide of ProcA, the substrate of ProcM. This thioester was ligated with a cysteine derivative that resulted in an alkyne at the C-terminus of the leader peptide. This alkyne in turn was used to conjugate the leader peptides to a variety of synthetic peptides by copper-catalyzed azide alkyne cycloaddition. Using deuterium-labeled Ser and Thr in the substrate analogues thus prepared, dehydration by ProcM was established to occur from C-to-N-terminus for two different substrates. Cyclization also occurred with a specific order, which depended on the sequence of the substrate peptides. Furthermore, using orthogonal cysteine side-chain protection in the two semisynthetic peptide substrates, we were able to rule out spontaneous non-enzymatic cyclization events to explain the very high substrate tolerance of ProcM. Finally, the enzyme was capable of exchanging protons at the alpha-carbon of MeLan, suggesting that ring formation could be reversible. These findings are discussed in the context of the mechanism of the substrate-tolerant ProcM, which may aid future efforts in lanthipeptide engineering.

  DOI：

  10.1021/ja504692v
• 作为产物：
  描述：

  N,N'-双(叔丁氧羰基)-L-胱氨酸 、 3-丁炔-1-胺盐酸盐 在 N,N-二异丙基乙胺 、 N-羟基-7-氮杂苯并三氮唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 反应 30.0h， 以77%的产率得到di-tert-butyl ((2R,2'R)-disulfanediylbis(3-(but-3-yn-1-ylamino)-3-oxopropane-1,2-diyl))dicarbamate
  参考文献：
  名称：

  Mechanistic Studies on the Substrate-Tolerant Lanthipeptide Synthetase ProcM

  摘要：

  Lanthipeptides are a class of post-translationally modified peptide natural products. They contain lanthionine (Lan) and methyllanthionine (MeLan) residues, which generate cross-links and endow the peptides with various biological activities. The mechanism of a highly substrate-tolerant lanthipeptide synthetase, ProcM, was investigated herein. We report a hybrid ligation strategy to prepare a series of substrate analogues designed to address a number of mechanistic questions regarding catalysis by ProcM. The method utilizes expressed protein ligation to generate a C-terminal thioester of the leader peptide of ProcA, the substrate of ProcM. This thioester was ligated with a cysteine derivative that resulted in an alkyne at the C-terminus of the leader peptide. This alkyne in turn was used to conjugate the leader peptides to a variety of synthetic peptides by copper-catalyzed azide alkyne cycloaddition. Using deuterium-labeled Ser and Thr in the substrate analogues thus prepared, dehydration by ProcM was established to occur from C-to-N-terminus for two different substrates. Cyclization also occurred with a specific order, which depended on the sequence of the substrate peptides. Furthermore, using orthogonal cysteine side-chain protection in the two semisynthetic peptide substrates, we were able to rule out spontaneous non-enzymatic cyclization events to explain the very high substrate tolerance of ProcM. Finally, the enzyme was capable of exchanging protons at the alpha-carbon of MeLan, suggesting that ring formation could be reversible. These findings are discussed in the context of the mechanism of the substrate-tolerant ProcM, which may aid future efforts in lanthipeptide engineering.

  DOI：

  10.1021/ja504692v