(E)-(2R,3R,4S)-3-tert-butyldimethylsilyloxy-2,4-dimethyl-oct-6-en-1-oyl-L-valine-L-phenylalanine-hexahydropyridazine-3S-carboxylic acid hex-5-enyl ester | 519002-55-2

• 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: (E)-(2R,3R,4S)-3-tert-butyldimethylsilyloxy-2,4-dimethyl-oct-6-en-1-oyl-L-valine-L-phenylalanine-hexahydropyridazine-3S-carboxylic acid hex-5-enyl ester
• CAS: 519002-55-2
• 化学式: C₄₁H₆₈N₄O₆Si
• 分子量: 741.1
• InChiKey: XQPQPIATGNOPSB-WTSFAXLDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.88
• 重原子数：
  52.0
• 可旋转键数：
  20.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.66
• 拓扑面积：
  126.07
• 氢给体数：
  3.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  (E)-(2R,3R,4S)-3-tert-butyldimethylsilyloxy-2,4-dimethyl-oct-6-en-1-oyl-L-valine-L-phenylalanine-hexahydropyridazine-3S-carboxylic acid hex-5-enyl ester 在 Grubbs catalyst first generation 作用下， 以 二氯甲烷 为溶剂， 以52%的产率得到(E)-(3S,6S,9R,10R,11S,21S)-3-Benzyl-10-(tert-butyl-dimethyl-silanyloxy)-6-isopropyl-9,11-dimethyl-19-oxa-1,4,7,25-tetraaza-bicyclo[19.3.1]pentacos-13-ene-2,5,8,20-tetraone
  参考文献：
  名称：

  Sanglifehrin−Cyclophilin Interaction:  Degradation Work, Synthetic Macrocyclic Analogues, X-ray Crystal Structure, and Binding Data

  摘要：

  Sanglifehrin A (SFA) is a novel immunosuppressive natural product isolated from Streptomyces sp. A92-308110. SFA has a very strong affinity for cyclophilin A (IC50 = 6.9 +/- 0.9 nM) but is structurally different from cyclosporin A (CsA) and exerts its immunosuppressive activity via a novel mechanism. SFA has a complex molecular structure consisting of a 22-membered macrocycle, bearing in position 23 a nine-carbon tether terminated by a highly substituted spirobicyclic moiety. Selective oxidative cleavage of the C-26=C-27 exocyclic double bond affords the spirolactam containing fragment 1 and macrolide 2. The affinity of 2 for cyclophilin (IC50 = 29 +/- 2.1 nM) is essentially identical to SFA, which indicates that the interaction between SFA and cyclophilin A is mediated exclusively by the macrocyclic portion of the molecule. This observation was confirmed by the X-ray crystal structure resolved at 2.1 Angstrom of cyclophilin A complexed to macrolide 16, a close analogue of 2. The X-ray crystal structure showed that macrolide 16 binds to the same deep hydrophobic pocket of cyclophilin A as CsA. Additional valuable details of the structure-activity relationship were obtained by two different chemical approaches: (1) degradation work on macrolide 2 or (2) synthesis of a library of macrolide analogues using the ring-closing metathesis reaction as the key step. Altogether, it appears that the complex macrocyclic fragment of SFA is a highly optimized combination of multiple functionalities including an (E,E)-diene, a short polypropionate fragment, and an unusual tripeptide unit, which together provide an extremely strong affinity for cyclophilin A.

  DOI：

  10.1021/ja021327y
• 作为产物：
  描述：

  (E)-(2R,3R,4S)-3-hydroxy-2,4-dimethyl-oct-6-en-1-oyl-L-valine-L-phenylalanine-hexahydropyridazine-3S-carboxylic acid methyl ester 在 吡啶 、 lithium hydroxide 、 三苯基膦 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 生成 (E)-(2R,3R,4S)-3-tert-butyldimethylsilyloxy-2,4-dimethyl-oct-6-en-1-oyl-L-valine-L-phenylalanine-hexahydropyridazine-3S-carboxylic acid hex-5-enyl ester
  参考文献：
  名称：

  Sanglifehrin−Cyclophilin Interaction:  Degradation Work, Synthetic Macrocyclic Analogues, X-ray Crystal Structure, and Binding Data

  摘要：

  Sanglifehrin A (SFA) is a novel immunosuppressive natural product isolated from Streptomyces sp. A92-308110. SFA has a very strong affinity for cyclophilin A (IC50 = 6.9 +/- 0.9 nM) but is structurally different from cyclosporin A (CsA) and exerts its immunosuppressive activity via a novel mechanism. SFA has a complex molecular structure consisting of a 22-membered macrocycle, bearing in position 23 a nine-carbon tether terminated by a highly substituted spirobicyclic moiety. Selective oxidative cleavage of the C-26=C-27 exocyclic double bond affords the spirolactam containing fragment 1 and macrolide 2. The affinity of 2 for cyclophilin (IC50 = 29 +/- 2.1 nM) is essentially identical to SFA, which indicates that the interaction between SFA and cyclophilin A is mediated exclusively by the macrocyclic portion of the molecule. This observation was confirmed by the X-ray crystal structure resolved at 2.1 Angstrom of cyclophilin A complexed to macrolide 16, a close analogue of 2. The X-ray crystal structure showed that macrolide 16 binds to the same deep hydrophobic pocket of cyclophilin A as CsA. Additional valuable details of the structure-activity relationship were obtained by two different chemical approaches: (1) degradation work on macrolide 2 or (2) synthesis of a library of macrolide analogues using the ring-closing metathesis reaction as the key step. Altogether, it appears that the complex macrocyclic fragment of SFA is a highly optimized combination of multiple functionalities including an (E,E)-diene, a short polypropionate fragment, and an unusual tripeptide unit, which together provide an extremely strong affinity for cyclophilin A.

  DOI：

  10.1021/ja021327y