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4,4-dimethyl-cholest-5-en-3-one | 2220-42-0

中文名称
——
中文别名
——
英文名称
4,4-dimethyl-cholest-5-en-3-one
英文别名
4,4-Dimethyl-5-cholesten-3-one;4,4-dimethylcholest-5-en-3-one;4,4-Dimethyl-cholest-5-en-3-on;4,4-Dimethyl-Δ5-cholesten-on-(3);4,4-Dimethyl-cholesten-(5)-on-(3);4,4-Dimethylcholest-5-en-3-on;4,4-Dimethyl cholest-5-en-3-one;(8S,9S,10R,13R,14S,17R)-4,4,10,13-tetramethyl-17-[(2R)-6-methylheptan-2-yl]-2,7,8,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-one
4,4-dimethyl-cholest-5-en-3-one化学式
CAS
2220-42-0
化学式
C29H48O
mdl
——
分子量
412.7
InChiKey
UKRMXWMCDFUMQY-KOVCEZANSA-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):
    9.1
  • 重原子数:
    30
  • 可旋转键数:
    5
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.9
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

SDS

SDS:2b85d0ac33ed4e9658c41c0c2f77ed5d
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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
  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    描述:
    4,4-dimethyl-cholest-5-en-3-one 在 aluminum isopropoxide 作用下, 生成 4,4-dimethylcholesterol
    参考文献:
    名称:
    516.类固醇与沃尔登反演。LI部分。4,4-二甲基胆甾-5-en-3α-甲苯基对苯磺酸盐的溶剂分解
    摘要:
    DOI:
    10.1039/jr9620002684
  • 作为产物:
    描述:
    sodium methylate对甲苯磺酸 作用下, 以 为溶剂, 生成 4,4-dimethyl-cholest-5-en-3-one
    参考文献:
    名称:
    类固醇A环内酯与格氏试剂的反应
    摘要:
    添加格氏试剂的溶液与4- oxacholesta -5,7-二烯-3-酮(4),得到桥接酮3-烷基-3-羟基-3-(5 → 6βH)的abeo- -甲-norcholest -7- en-5-ones(12)以及由后者通过在5-羰基上还原(相对于Grignard加成反应)而形成的“过度反应”产物。用异丙基溴化镁处理时,4-Oxacholest-5-en-3-one(1)的行为类似。既3-羟基-3-异丙基-3(5 → 6βH)的abeo- -甲-norcholestan -5-酮和异构二酮,3-异丙基-3,5- seco-甲-norcholestan -3,5-二酮(16 )与甲苯接触p苯中的-磺酸部分产生4,4-二甲基胆甾-5-烯-3-酮,进一步转化成富含1,3,4-三甲基-19-降胆固醇1,3的芳香烃混合物,5(10)-三烯(25)。
    DOI:
    10.1039/j39710000378
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文献信息

  • Synthesis of unsaturated carbonyl compounds via a chromium-mediated allylic oxidation by 70% tert.butylhydroperoxide
    作者:Jacques Muzart
    DOI:10.1016/s0040-4039(00)96591-2
    日期:1987.1
    Alkenes were converted into α,β-unsaturated carbonyl compounds using excess of tert.butylhydroperoxide and catalytic amounts of chromiumVI oxide at room temperature. Fair yields and conversions were obtained from Δ5-steroids while allylic oxidation of acyclic alkenes was less efficient. Epoxidation of the double bond, sometimes observed, remained a minor reaction pathway.
    烯烃转化成使用过量tert.butylhydroperoxide和催化量的铬的α,β不饱和羰基化合物VI在室温下的氧化。公平的产率和转化率从Δ得到5而无环烯烃的烯丙基氧化是效率较低-steroids。有时观察到双键的环氧化仍然是次要的反应途径。
  • Photo-induced transformations. Part 51. Photo- and thermally-induced rearrangements of hypoiodites of steroidal homoallyl alcohols. The formation of some oxygen heterocycles via photo- and thermally-induced rearrangements of 3-hydroxy-Δ<sup>5</sup>-steroid hypoiodites in the presence of mercury(<scp>II</scp>) oxide and iodine
    作者:Hiroshi Suginome、Akio Furusaki、Kimitoshi Kato、Norio Maeda、Fumihiko Yonebayashi
    DOI:10.1039/p19810000236
    日期:——
    Hypoiodites of cholesterol and epicholesterol in benzene containing mercury(II) oxide and iodine underwent photo-induced rearrangement to give 3α,5-epoxy-6β- and -6α-iodo-A-homo-4-oxa-5α-cholestanes (3) and (4), together with 3-formyloxy-2-iodo-A-nor-2,3-secocholest-5-ene (2). Stereochemistry of the epoxide (3) was established by an X-ray crystallographic analysis. When the reaction of cholesterol
    在苯含汞(胆固醇和epicholesterol的次碘酸盐II)氧化物和碘后行光致重排,得到3α,5-环氧- 6β-和-6α碘-阿-homo -4-氧杂- 5α-胆甾烷(3) (4)与3-甲酰氧基-2-碘-A -nor-2,3-secocholest-5-烯(2)一起。通过X射线晶体学分析确定了环氧化物(3)的立体化学。当胆固醇次碘酸根的反应在55-60℃下,只有6β异构体热引起的,伴随着胆甾-5-烯3α基甲-homo -4- oxacholest -5-烯3α基醚( 20),形成了-homo-4-oxacholest-5-en-3α-ol(21)。碘代环氧化合物(3)或(4)的催化氢解反应得到3α,5-环氧-A-homo-4-oxa-5β-胆甾烷(16)经三氟化硼-乙醚-乙酸酐处理后转化为2-乙酰基-5-乙酰氧基甲基-4-oxa-5β-胆甾-2-烯(29)苯。
  • Montmorillonite Clay Catalysis. Part 2.1 An Efficient and Convenient Procedure for the Preparation of Acetals catalysed by Montmorillonite K-10
    作者:Tong-Shuang Li、Sheng-Hui Li、Ji-Tai Li、Hui-Zhang Li
    DOI:10.1039/a605661j
    日期:——
    Acetalization of aldehydes and ketones is catalysed by montmorillonite K-10 in refluxing benzene or toluene in excellent yields.
    醛和酮的缩醛反应在沸腾的苯或甲苯中由膨润土 K-10 催化,产率极高。
  • Obsevations on the cleavage of the bismuth–carbon bond in Bi<sup>V</sup>compounds: a new arylation reaction
    作者:Derek H. R. Barton、David J. Lester、William B. Motherwell、M. Teresa Barros Papoula
    DOI:10.1039/c39800000246
    日期:——
    trianyl-organobismuth oxidants are presented; deuterium labelling studies have established that the mechanism of oxidation of allylic alcohols by these reagents involves, to some extent, cleavage of the bismuth–aryl bond; several reactions involving the synthetically useful transfer of an aryl group from bismuth to nitrogen and to carbon are described.
    给出了五价三芳基-有机铋氧化剂的选择性的其他实例;参见表1。氘标记研究已经确定,这些试剂氧化烯丙醇的机理在一定程度上涉及铋-芳基键的裂解。描述了涉及芳基从铋到氮和碳的合成上有用的转移的几种反应。
  • The Photo-Beckmann Rearrangement of Steroidal β,γ-Unsaturated Ketone Oximes
    作者:Hiroshi Suginome、Norio Maeda、Yuko Takahashi、Nobuyoshi Miyata
    DOI:10.1246/bcsj.54.846
    日期:1981.3
    The photoreaction of 4,4-dimethylcholest-5-en-3-one oxime, a β,γ-unsaturated ketone oxime, has given two lactams, 4a,4a-dimethyl-3-aza-A-homocholest-5-en-4-one and 4a,4a-dimethyl-4-aza-A-homocholest-5-en-3-one resulting from photo-Beckmann rearrangement. 4,4,6-Trimethylcholest-5-en-3-one oxime behaved analogously on photolysis, yielding two lactams but accompanied by 4,6-dimethyl-4-methylene-3,4-s
    4,4-二甲基胆甾醇-5-en-3-one肟(一种β,γ-不饱和酮肟)的光反应产生了两种内酰胺,4a,4a-二甲基-3-氮杂-A-homocholest-5-en- 4-one 和 4a,4a-dimethyl-4-aza-A-homocholest-5-en-3-one 由 photo-Beckmann 重排产生。4,4,6-Trimethylcholest-5-en-3-one 肟在光解时表现类似,产生两种内酰胺,但伴随着 4,6-二甲基-4-亚甲基-3,4-secoccholest-5-ene-3-腈作为次要产品。相比之下,普通贝克曼重排的主要产物是二阶贝克曼重排产生的腈。
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