cholesteryl 2-bromopalmitate

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: cholesteryl 2-bromopalmitate
• 英文别名: [(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] 2-bromohexadecanoate
• 化学式: C₄₃H₇₅BrO₂
• 分子量: 703.971
• InChiKey: COOXBKKEMCYRQU-PFKKVUANSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  17.2
• 重原子数：
  46
• 可旋转键数：
  21
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

上下游信息

• 上游原料

  中文名称	英文名称	CAS号	化学式	分子量
  胆固醇	cholesterol	57-88-5	C27H46O	386.662

反应信息

• 作为产物：
  描述：

  α-bromopalmitoyl chloride 、 胆固醇 在 三乙胺 作用下， 以 二氯甲烷 为溶剂， 以85%的产率得到cholesteryl 2-bromopalmitate
  参考文献：
  名称：

  3-Alkyl-6-Chloro-2-pyrones:  Selective Inhibitors of Pancreatic Cholesterol Esterase

  摘要：

  A series of 3-alkyl-6-chloro-2-pyrones with cyclohexane rings tethered to the S-position was synthesized. The tether ranged from 0 to 4 methylene units. Inhibition of pancreatic-cholesterol esterase by this series of pyrones was markedly dependent upon the length of the tether. Dissociation constants as low as 25 nM were observed for 6-chloro-3-(1-ethyl-2-cyclohexyl)-2-pyranone. This class of cholesterol esterase inhibitors functioned as simple competitive inhibitors of substrate binding rather than as suicide substrates or active site inactivators. Trypsin and chymotrypsin were not strongly inhibited by this class of pyrones. Selectivities for cholesterol esterase were greater than 10(3). This is in contrast to 3-aryl-6-chloro-2-pyrones which are nonselective, irreversible inactivators of serine hydrolases, Thus, replacement of the 3-aryl group by an appropriately tethered 3-alkyl ring can produce highly selective inhibitors of cholesterol esterase. A second series of halogen-containing esters was prepared in which cholesterol was esterified with alpha-haloacyl halides. These haloesters were simple substrates of cholesterol esterase with no evidence of irreversible inactivation.

  DOI：

  10.1021/jm990309x

文献信息

• 3-Alkyl-6-Chloro-2-pyrones:  Selective Inhibitors of Pancreatic Cholesterol Esterase
  作者：Lorraine M. Deck、Miranda L. Baca、Stephanie L. Salas、Lucy A. Hunsaker、David L. Vander Jagt

  DOI：10.1021/jm990309x

  日期：1999.10.1

  A series of 3-alkyl-6-chloro-2-pyrones with cyclohexane rings tethered to the S-position was synthesized. The tether ranged from 0 to 4 methylene units. Inhibition of pancreatic-cholesterol esterase by this series of pyrones was markedly dependent upon the length of the tether. Dissociation constants as low as 25 nM were observed for 6-chloro-3-(1-ethyl-2-cyclohexyl)-2-pyranone. This class of cholesterol esterase inhibitors functioned as simple competitive inhibitors of substrate binding rather than as suicide substrates or active site inactivators. Trypsin and chymotrypsin were not strongly inhibited by this class of pyrones. Selectivities for cholesterol esterase were greater than 10(3). This is in contrast to 3-aryl-6-chloro-2-pyrones which are nonselective, irreversible inactivators of serine hydrolases, Thus, replacement of the 3-aryl group by an appropriately tethered 3-alkyl ring can produce highly selective inhibitors of cholesterol esterase. A second series of halogen-containing esters was prepared in which cholesterol was esterified with alpha-haloacyl halides. These haloesters were simple substrates of cholesterol esterase with no evidence of irreversible inactivation.