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5,6-dibromo-5,6-dihydro-2H-pyran-2-one | 22682-17-3

中文名称
——
中文别名
——
英文名称
5,6-dibromo-5,6-dihydro-2H-pyran-2-one
英文别名
2,3-Dibromo-2,3-dihydropyran-6-one
5,6-dibromo-5,6-dihydro-2H-pyran-2-one化学式
CAS
22682-17-3
化学式
C5H4Br2O2
mdl
——
分子量
255.894
InChiKey
ABQIQGCHKKOKRH-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.9
  • 重原子数:
    9
  • 可旋转键数:
    0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.4
  • 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

反应信息

点击查看最新优质反应信息

文献信息

  • WO2006/120472
    申请人:——
    公开号:——
    公开(公告)日:——
  • Selective inhibition of the cellular sodium pump by emicymarin and 14ß anhydroxy bufadienolides
    作者:Philip J. Hilton、William McKinnon、Edward C. Gravett、Jean-Marie R. Peron、Christopher M. Frampton、M. Gary Nicholls、Gwyn Lord
    DOI:10.1016/j.steroids.2010.07.010
    日期:2010.12
    Partial inhibition of the sodium pump (Na/K-ATP-ase) by a circulating inhibitor is known to occur in humans. The objectives of this study were to determine the effects of novel bufadienolides lacking an oxygen at C14 on sodium pumps in human erythrocytes and leucocytes, dog kidney and pig brain and to document the importance of the stereochemistry at C17 on the ability to inhibit these sodium pumps. 14 alpha bufadienolides were weak inhibitors of all preparations studied. 3 beta-OH,5 beta,14 beta bufadienolide produced near-total inhibition of dog kidney and pig brain Na/K-ATP-ase. Over the same concentration range, it maximally inhibited the sodium pump of erythrocytes by 70% and leucocytes by 47%. The inhibition profile induced in the leucocyte sodium pump deviated significantly from the simple sigmoidal relationship present in the other preparations over the 3 x 10(-5) to 1 x 10(-7) mol/1 concentration range. Allo-emicymarin (17 alpha) was confirmed to be a weak inhibitor of the sodium pump/ATP-ase compared with emicymarin (17 beta) but both were weaker inhibitors of the leucocyte sodium pump than that of the other preparations. Molecules with the C14 in the beta configuration are more efficacious than in the a configuration. In the case of emicymarin, the attachment of the furone at C17 in the a configuration results in substantially weaker inhibitory activity than in the beta configuration, seen in most cardenolides and bufadienolides. Unlike ouabain and bufalin that show no specificity of action in these preparations, 3 beta-OH,5 beta,14 beta bufadienolide selectively inhibits the activity of at least one low-prevalence subset of the leucocyte Na/K-ATP-ase. (C) 2010 Elsevier Inc. All rights reserved.
  • A Suzuki coupling approach to bufadienolides
    作者:Edward C Gravett、Philip J Hilton、Keith Jones、Fernando Romero
    DOI:10.1016/s0040-4039(01)01980-3
    日期:2001.12
    A high yielding route to bufadienolide type steroids using a novel Suzuki Coupling reaction between a range of steroid vinyl triflates and 2-pyrone-5-boronate 11 is presented. (C) 2001 Elsevier Science Ltd. All rights reserved.
  • POSNER, G. H.;HARRISON, W.;WETTLAUFER, D. G., J. ORG. CHEM., 1985, 50, N 25, 5041-5044
    作者:POSNER, G. H.、HARRISON, W.、WETTLAUFER, D. G.
    DOI:——
    日期:——
  • Unified Total Synthesis of Five Bufadienolides
    作者:Shinsuke Shimizu、Koichi Hagiwara、Hiroaki Itoh、Masayuki Inoue
    DOI:10.1021/acs.orglett.0c03251
    日期:2020.11.6
    synthesis of five bufadienolides: bufalin (1), bufogenin B (2), bufotalin (3), vulgarobufotoxin (4), and 3-(N-succinyl argininyl) bufotalin (5). After the steroidal ABCD ring 8 was produced, the D ring was cross-coupled with a 2-pyrone moiety and stereoselectively epoxidized to generate 6. TMSOTf promoted a stereospecific 1,2-hydride shift from 6 to establish the β-oriented 2-pyrone of 19. Functional group
    我们报告了五个bufadienolides的统一总合成:bufalin(1),bufogenin B(2),bufotalin(3),vulgarobufotoxin(4)和3-(N-琥珀酰精氨酰基)bufotalin(5)。甾体ABCD环8产生后,D环与2-吡喃酮部分交叉偶联并立体选择性环氧化生成6。TMSOTf促进了立体定向的1,2-氢化物从6转变为19的β定向2-吡喃酮。从官能团操作19提供1 - 5,可有效抑制癌细胞的生长。
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