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(4α,5)-epoxy-5α-cholestan-3-one | 2515-12-0

中文名称
——
中文别名
——
英文名称
(4α,5)-epoxy-5α-cholestan-3-one
英文别名
(4,5α)-Epoxy-5α-cholestan-3-one;4α,5-epoxy-5α-cholest-3-one;4α,5α-epoxycholestan-3-one;4,5-epoxy-5α-cholestan-3-one;4α,5-epoxy-5α-cholestan-3-one;4α,5-Epoxy-5α-cholestan-3-on;4a,5-Epoxy-5a-cholestan-3-one;(1S,2R,6S,8S,11S,12S,15R,16R)-2,16-dimethyl-15-[(2R)-6-methylheptan-2-yl]-7-oxapentacyclo[9.7.0.02,8.06,8.012,16]octadecan-5-one
(4α,5)-epoxy-5α-cholestan-3-one化学式
CAS
2515-12-0
化学式
C27H44O2
mdl
——
分子量
400.645
InChiKey
DNHVTVKDKYLDFF-REKCHVTFSA-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

物化性质

  • 熔点:
    123-124.5 °C(Solv: methanol (67-56-1))
  • 沸点:
    491.5±28.0 °C(Predicted)
  • 密度:
    1.03±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    8
  • 重原子数:
    29
  • 可旋转键数:
    5
  • 环数:
    5.0
  • sp3杂化的碳原子比例:
    0.96
  • 拓扑面积:
    29.6
  • 氢给体数:
    0
  • 氢受体数:
    2

上下游信息

  • 下游产品
    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

  • Highly efficient epoxidation of unsaturated steroids using magnesium bis(monoperoxyphthalate) hexahydrate
    作者:João F.S. Carvalho、M. Manuel Cruz Silva、M. Luisa Sá e Melo
    DOI:10.1016/j.tet.2009.01.100
    日期:2009.4
    Fast generation of epoxides from the corresponding homoallylic and allylic steroidal olefins was developed by using magnesium bis(monoperoxyphthalate) hexahydrate (MMPP) as oxidant suspended in acetonitrile (CH3CN) at reflux temperature. The protocol involves the use of a safe readily available oxidant along with an easy work-up, which renders the process very efficient. Selective 4,5- and 5,6-epoxidations
    通过在回流温度下使用悬浮在乙腈(CH 3 CN)中的双(双过氧邻苯二甲酸酯)六水合镁(MMPP)作为氧化剂,可以从相应的均烯丙基和烯丙基甾体烯烃快速生成环氧化物。该方案涉及使用安全易得的氧化剂以及易于后处理的方法,这使该过程非常有效。据报道类固醇的选择性4,5-和5,6-环氧化。其中,Δ的高立体选择性环氧化5 -B去甲胆甾烷达到了。而且,该方法对5,6-位是化学选择性的,可用于环A烯酮的环氧化。
  • Diastereoselective epoxidation of olefins by organo sulfonic peracids, II
    作者:R. Kluge、M. Schulz、S. Liebsch
    DOI:10.1016/0040-4020(95)01128-5
    日期:1996.2
    have investigated the behaviour of sulfonic peracids 2in situ generated towards olefins 7a,7b,9,11,14,16,18, allylic and homoallylic alcohols 20,22,24,26,28,30,33 and α,β-unsaturated ketones 35,37,39. Generally, the epoxidation proceeds in a peracid-like manner with greater diastereoselectivity than those by common oxidants. In particular, the epoxidation of Δ4 3-ketosteroids 39a-i led to 4α,5α-epoxides
    我们已经调查磺酸过酸的行为2原位朝向烯烃产生的图7A,7B,9,11,14,16,18,烯丙基和高烯丙基醇20,22,24,26,28,30,33和α,β-不饱和酮35,37,39。通常,环氧化以类似过酸的方式进行,其非对映选择性高于普通氧化剂。特别是,环氧化Δ 4 3-酮类固醇39A-I导致4α,5α环氧化物40A-i的具有显着的高解值。在胆固醇28b的环氧化中也发现了增强的α-选择性。由于反应条件温和,甚至对酸敏感的环氧化物以良好的产率获得了8a,8b,10,12,13,15,17,19。
  • Synthesis of Symmetrical and Hybrid Dimeric Steroids by Double Suzuki–Miyaura Cross Coupling of 4-Bromo-3-oxo Steroids and Benzene-1,4-diboronic Acid
    作者:Martha C. Mayorquín-Torres、Gerardo I. Santiago-Sampedro、Marcos Flores-Álamo、Martín. A. Iglesias-Arteaga
    DOI:10.1055/s-0037-1611484
    日期:2019.8
    one hybrid dimer in which the steroid cores are connected by a 1,4-phenylene moiety were obtained by double Suzuki–Miyaura cross coupling of benzene-1,4-diboronic acid with 4-bromo-4-en-3-oxosteroids derived from cholesterol and diosgenin. Detailed NMR characterization of the obtained dimers is described. Two symmetrical dimers and one hybrid dimer in which the steroid cores are connected by a 1,4-phenylene
    抽象的 通过将苯-1,4-二硼酸与4-bromo-4-en-3进行双铃木-宫浦交叉偶联,获得了两个对称的二聚体和一个杂合的二聚体,其中的类固醇核通过1,4-亚苯基连接。 -oxosteroids来源于胆固醇和薯os皂素。描述了获得的二聚体的详细NMR表征。 通过将苯-1,4-二硼酸与4-bromo-4-en-3进行双铃木-宫浦交叉偶联,获得了两个对称的二聚体和一个杂合的二聚体,其中的类固醇核通过1,4-亚苯基连接。 -oxosteroids来源于胆固醇和薯os皂素。描述了获得的二聚体的详细NMR表征。
  • Epoxidation and Baeyer–Villiger oxidation of γ-hydroxy-αβ-unsaturated ketones on exposure to m-chloroperbenzoic acid
    作者:Marioara Mendelovici、Erwin Glotter
    DOI:10.1039/p19920001735
    日期:——
    of 6β-and 6α-hydroxy-(acetoxy-)cholest-4-en-3-one with MCPBA gives two types of product, depending on the initial site of the peroxy acid attack. Attack at the carbonyl group gives a Baeyer–Villiger rearrangement leading first to enol lactones and then by epoxidation of the latter to epoxy lactones. Alternatively, attack at the double bond gives epoxy ketones which can subsequently undergo a Baeyer–Villiger
    用MCPBA处理3β-和3α-羟基(乙酰氧基)胆甾4烯-6和6β和6α-羟基(乙酰氧基)胆甾4烯-3产生两种类型的产物,取决于过氧酸侵蚀的初始部位。攻击羰基会产生Baeyer-Villiger重排,首先导致烯醇内酯,然后再将后者环氧化为环氧内酯。另外,对双键的进攻会产生环氧酮,随后会发生拜尔-维利格重排,从而生成环氧内酯。除了一个例外(3α-hydroxycholest-4-en-6-one),烯酮的Baeyer-Villiger氧化是主要过程。在轴向3α-或6β-乙酰氧基的存在下,双键的环氧化被抑制。
  • Peroxide oxidation of Δ<sup>4</sup>-3-ketosteroids
    作者:Herbert L. Holland、Elly Riemland、Ulrich Daum
    DOI:10.1139/v82-268
    日期:1982.8.1

    Treatment of Δ4-3-ketosteroids with tert-buly hydroperoxide in the presence of lithium hydroxide leads to the formation of the corresponding 4β,5β epoxides stereospecifically and in good yield. The stereospecificity of this reaction is explicable in terms of the accepted mechanism for the hydrogen peroxide epoxidation of Δ4-3-ketosteroids.The use of aqueous sodium peroxide as oxidant leads to the production of the corresponding Δ4-3,6-diones. A mechanism for this reaction is proposed in which the key step is autoxidation of the corresponding deconjugated Δ5-3-ketone, produced from the starting material insitu by the action of the reagents. Lithium peroxide does not oxidize androst-4-ene-3,17-dione at C-6, but produces the 4,5 epoxides in low yield together with an A-nor-3,5-secoacid.

    Δ4-3-酮类固醇在叔丁基过氧化氢存在下,在氢氧化锂存在下处理,会特异性地形成相应的4β,5β环氧化物,并且收率较高。这种反应的特异性可以通过已接受的氢过氧化物环氧化Δ4-3-酮类固醇的机制来解释。使用水过氧化钠作为氧化剂会导致相应的Δ4-3,6-二酮的生成。对于这种反应提出了一个机制,其中关键步骤是由试剂的作用在原位产生的相应的去共轭Δ5-3-酮类固醇的自氧化。氧化锂不会氧化雄烯-4-烯-3,17-二酮的C-6位,但会产生收率较低的4,5环氧化物,同时伴随着一个A-诺尔-3,5-去氧基酸。
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