((Z)-(S)-1-Isobutyl-but-2-enyl)-carbamic acid tert-butyl ester | 129603-03-8

• 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: ((Z)-(S)-1-Isobutyl-but-2-enyl)-carbamic acid tert-butyl ester
• 英文别名: tert-butyl (S)-(6-methylhept-2-en-4-yl)carbamate
• CAS: 129603-03-8；129603-04-9
• 化学式: C₁₃H₂₅NO₂
• 分子量: 227.347
• InChiKey: UEBVBPFAWDGLJE-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  16.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  38.33
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  ((Z)-(S)-1-Isobutyl-but-2-enyl)-carbamic acid tert-butyl ester 在 palladium catalyst 氢气 作用下， 以 乙醇 为溶剂， 生成 ((R)-3-Methyl-1-propyl-butyl)-carbamic acid tert-butyl ester
  参考文献：
  名称：

  Gastrin releasing peptide antagonists with improved potency and stability

  摘要：

  Gastrin releasing peptide (GRP) is a 27 amino acid peptide hormone which is homologous to the amphibian peptide bombesin. Two series of novel GRP antagonists were developed by C-terminal modification of N-acetyl-GRP-20-27 amide. Peptide derivatives within each series resist enzymatic degradation in serum and exhibit strong affinity for the GRP receptor. The first series of compounds replaces the Leu26-Met27 region of GRP with an alkyl ether moiety. One member of this series, N-acetyl-GRP-20-25-NH-[(S)-1-ethoxy-4-methyl-2-pentane], specifically blocked radiolabeled GRP binding with an IC50 of 6 nM. In the second series of antagonists the oxygen of the ether moiety is replaced with a methylene group, resulting in GRP antagonists which are equipotent to native GRP in receptor binding assays (IC50 = 2 nM) and are also resistant to proteolytic degradation in vitro. All of the C-terminally modified peptides tested blocked GRP-stimulated mitogenesis in Swiss 3T3 mouse fibroblasts. Representative compounds also blocked GRP-induced elevation of [Ca2+]i in human SCLC cells, and inhibited GRP-independent release of gastrin in vivo.

  DOI：

  10.1021/jm00111a027
• 作为产物：
  描述：

  2-甲基-2-丙基[(2S)-4-甲基-1-氧代-2-戊烷基]氨基甲酸酯 、 乙基三苯基溴化膦 在 potassium hexamethyldisilazane 作用下， 以 四氢呋喃 为溶剂， 生成 ((Z)-(S)-1-Isobutyl-but-2-enyl)-carbamic acid tert-butyl ester
  参考文献：
  名称：

  Gastrin releasing peptide antagonists with improved potency and stability

  摘要：

  Gastrin releasing peptide (GRP) is a 27 amino acid peptide hormone which is homologous to the amphibian peptide bombesin. Two series of novel GRP antagonists were developed by C-terminal modification of N-acetyl-GRP-20-27 amide. Peptide derivatives within each series resist enzymatic degradation in serum and exhibit strong affinity for the GRP receptor. The first series of compounds replaces the Leu26-Met27 region of GRP with an alkyl ether moiety. One member of this series, N-acetyl-GRP-20-25-NH-[(S)-1-ethoxy-4-methyl-2-pentane], specifically blocked radiolabeled GRP binding with an IC50 of 6 nM. In the second series of antagonists the oxygen of the ether moiety is replaced with a methylene group, resulting in GRP antagonists which are equipotent to native GRP in receptor binding assays (IC50 = 2 nM) and are also resistant to proteolytic degradation in vitro. All of the C-terminally modified peptides tested blocked GRP-stimulated mitogenesis in Swiss 3T3 mouse fibroblasts. Representative compounds also blocked GRP-induced elevation of [Ca2+]i in human SCLC cells, and inhibited GRP-independent release of gastrin in vivo.

  DOI：

  10.1021/jm00111a027

文献信息

• Structure–activity relationship study of hydroxyethylamine isostere and P1′ site structure of peptide mimetic BACE1 inhibitors
  作者：Kazuya Kobayashi、Takuya Otani、Saki Ijiri、Yuki Kawasaki、Hiroki Matsubara、Takahiro Miyagi、Taishi Kitajima、Risa Iseki、Katsuyasu Ishizawa、Naoka Shindo、Kouta Okawa、Kouta Ueda、Syun Ando、Momoka Kawakita、Yasunao Hattori、Kenichi Akaji

  DOI：10.1016/j.bmc.2021.116459

  日期：2021.11

  An aromatic substituent has been introduced into a known hydroxyethylamine (HEA)-type BACE1 inhibitor containing the superior substrate sequence to enhance inhibitory activity. The HEA-type isosteres bearing different hydroxyl group and methyl group configurations were prepared through a branched synthesis approach using intra- and inter-molecular epoxide opening reactions. The effect of their configuration

  已将芳香族取代基引入已知的羟乙胺 (HEA) 型 BACE1 抑制剂中，该抑制剂含有优越的底物序列以增强抑制活性。具有不同羟基和甲基构型的 HEA 型等排体是通过使用分子内和分子间环氧化物开环反应的支链合成方法制备的。评估了它们的构型效果，表明R构型提高了抑制活性，而在等排体上引入甲基降低了活性。基于具有R构型的非取代等排体，21 种衍生物在P处含有各种取代基1'位点被合成。我们对衍生物的评估表明，P 1' 位点的结构对活性有明显的影响，并且鉴定出对重组 BACE1 (rBACE1) 具有亚微摩尔活性的高效抑制剂40g 。40g与rBACE1的对接模拟表明， P 1'苯环对位的羧甲基与S1'口袋中的Lys285相互作用。
• Chirality transfer in palladium catalyzed reactions of allylammonium salts
  作者：Takayuki Doi、Arata Yanagisawa、Masahiro Miyazawa、Keiji Yamamoto

  DOI：10.1016/0957-4166(95)00021-g

  日期：1995.2

  Optically active 1-isobutyl-2(Z)-butenyltrimethylammonium iodide (10) underwent allylation with dimethyl sodiomalonate in the presence of a palladium(0) catalyst. The reaction proceeded predominantly with 1,3 transposition and with inversion of configuration due probably to a prior isomerization from anti to syn-pi-allylpalladium intermediate (14-->15). The stereochemistry observed in the reaction with phenylzinc chloride was opposite to that with the soft nucleophile.