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2-Methylen-A-nor-5α-cholesten | 17321-13-0

中文名称
——
中文别名
——
英文名称
2-Methylen-A-nor-5α-cholesten
英文别名
——
2-Methylen-A-nor-5α-cholesten化学式
CAS
17321-13-0
化学式
C27H46
mdl
——
分子量
370.662
InChiKey
BHJBQTLCGIPSEV-JAFXXSQISA-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:
    67-69 °C
  • 沸点:
    436.4±12.0 °C(Predicted)
  • 密度:
    0.93±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    8.27
  • 重原子数:
    27.0
  • 可旋转键数:
    5.0
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.93
  • 拓扑面积:
    0.0
  • 氢给体数:
    0.0
  • 氢受体数:
    0.0

反应信息

点击查看最新优质反应信息

文献信息

  • Dovinola,V.; Mangoni,L., Gazzetta Chimica Italiana, 1969, vol. 99, p. 206 - 218
    作者:Dovinola,V.、Mangoni,L.
    DOI:——
    日期:——
  • Oxetane von A-nor-Steroiden: 2?, 5-Oxido-A-nor-5?-cholestan, 2?, 5-Oxido-A-nor-5?-cholestan und 2?-�thyl-2?, 2?-oxido-A-nor-5?-cholestan
    作者:R. Heckendorn、Ch. Tamm
    DOI:10.1002/hlca.19680510508
    日期:1968.7.10
    AbstractTreatment of 2β‐tosyloxy‐A‐nor‐5α‐cholestane‐5‐ol (2) with t‐butoxide in t‐butanol gave 2α, 5‐epoxy‐A‐nor‐5α‐cholestane (3) in quantitative yield.When A‐nor‐5β‐cholestane‐2α, 5‐diol (4) was treated with tosyl chloride in pyridine 2β‐chloro‐A‐nor‐5β‐cholestane‐5‐ol (7) and 2α‐tosyloxy‐A‐nor‐5β‐cholestane‐5‐ol (8) were obtained. Whereas the chloride 7 was resistant to t‐butoxide the tosylate 8 was transformed into an 1 : 1 mixture of 2α, 5‐epoxy‐5β‐cholestane (10) and 2ξ‐t‐butoxy‐A‐nor‐5β‐cholestane‐5‐ol (11). In 2α‐tosyloxy‐A‐nor‐5α‐cholestane‐5‐ol (12) substitution occurred as the only reaction.Both oxetanes 3 and 10 isomerize after heating above 50° and in polar or protic solvents to form A‐nor‐Δ3(5)‐cholestene‐2α‐ol (6) and ‐2β‐ol (14) respectively. Also, 2, 5‐diols are encountered.2α‐Ethyl‐2β, 2′‐epoxy‐A‐nor‐5α‐cholestane (23) was synthesized starting from A‐nor‐5α‐cholestane‐2‐one (17). The intermediates were the ester 16, the diol 18, the hydroxy‐tosylate 19 and the chlorhydrin 20. The spirocyclic oxetane 23 was reduced by LiAlH4 in dioxane (not in ether). By chromatography on silica gel 23 was isomerized to the homoallylic alcohol 21 and transformed into 2‐methylene‐A‐nor‐5α‐cholestane (24) by fragmentation.The IR. and NMR. spectra of the new oxetanes were compared with those of a series of known oxetanes.
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同类化合物

(5β)-17,20:20,21-双[亚甲基双(氧基)]孕烷-3-酮 (5α)-2′H-雄甾-2-烯并[3,2-c]吡唑-17-酮 (3β,20S)-4,4,20-三甲基-21-[[[三(异丙基)甲硅烷基]氧基]-孕烷-5-烯-3-醇-d6 (25S)-δ7-大发酸 (20R)-孕烯-4-烯-3,17,20-三醇 (11β,17β)-11-[4-({5-[(4,4,5,5,5-五氟戊基)磺酰基]戊基}氧基)苯基]雌二醇-1,3,5(10)-三烯-3,17-二醇 齐墩果酸衍生物1 黄麻属甙 黄芪皂苷III 黄芪皂苷 II 黄芪甲苷 IV 黄芪甲苷 黄肉楠碱 黄果茄甾醇 黄杨醇碱E 黄姜A 黄夹苷B 黄夹苷 黄夹次甙乙 黄夹次甙乙 黄夹次甙丙 黄体酮环20-(乙烯缩醛) 黄体酮杂质EPL 黄体酮杂质1 黄体酮杂质 黄体酮杂质 黄体酮EP杂质M 黄体酮EP杂质G(RRT≈2.53) 黄体酮EP杂质F 黄体酮6-半琥珀酸酯 黄体酮 17alpha-氢过氧化物 黄体酮 11-半琥珀酸酯 黄体酮 麦角甾醇葡萄糖苷 麦角甾醇氢琥珀酸盐 麦角甾烷-6-酮,2,3-环氧-22,23-二羟基-,(2b,3b,5a,22R,23R,24S)-(9CI) 麦角甾烷-3,6,8,15,16-五唑,28-[[2-O-(2,4-二-O-甲基-b-D-吡喃木糖基)-a-L-呋喃阿拉伯糖基]氧代]-,(3b,5a,6a,15b,16b,24x)-(9CI) 麦角甾烷-26-酸,5,6:24,25-二环氧-14,17,22-三羟基-1-羰基-,d-内酯,(5b,6b,14b,17a,22R,24S,25S)-(9CI) 麦角甾-8-烯-3-醇 麦角甾-8,24(28)-二烯-26-酸,7-羟基-4-甲基-3,11-二羰基-,(4a,5a,7b,25S)- 麦角甾-7,22-二烯-3-酮 麦角甾-7,22-二烯-17-醇-3-酮 麦角甾-5,24-二烯-26-酸,3-(b-D-吡喃葡萄糖氧基)-1,22,27-三羟基-,d-内酯,(1a,3b,22R)- 麦角甾-5,22,25-三烯-3-醇 麦角甾-4,6,8(14),22-四烯-3-酮 麦角甾-1,4-二烯-3-酮,7,24-二(乙酰氧基)-17,22-环氧-16,25-二羟基-,(7a,16b,22R)-(9CI) 麦角固醇 麦冬皂苷D 麦冬皂苷D 麦冬皂苷 B