methyl 4,6-O-benzylidene-3-deoxy-3-C-methyl-3-C-propenyl-α-D-erythro-hexopyranoside | 171076-01-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: methyl 4,6-O-benzylidene-3-deoxy-3-C-methyl-3-C-propenyl-α-D-erythro-hexopyranoside
• 英文别名: (2R,4aR,6S,8S,8aS)-6-methoxy-8-methyl-2-phenyl-8-prop-2-enyl-4a,8a-dihydro-4H-pyrano[3,2-d][1,3]dioxin-7-one
• CAS: 171076-01-0
• 化学式: C₁₈H₂₂O₅
• 分子量: 318.37
• InChiKey: JHOCHAVXTPPOSC-FXXCCUJSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 4,6-O-benzylidene-3-deoxy-3-C-methyl-3-C-propenyl-α-D-erythro-hexopyranoside 在 Grubbs catalyst first generation 作用下， 以 四氢呋喃 、 苯 为溶剂， 反应 25.0h， 生成 methyl (R)-4,6-O-benzylidene-2,3-C-(propene-1-ylidene-3-yl)-3-deoxy-3-C-methyl-α-D-glucopyranoside
  参考文献：
  名称：

  使用闭环复分解法立体选择性制备对映体纯的环状碳水化合物

  摘要：

  闭环复分解已应用于一系列葡萄糖衍生物以产生环戊烯衍生物5a和5b，环己烯衍生物8和9，环庚烯12和环辛烯14。还与二氢吡喃22一起形成了环二氢呋喃19、26a和26b。生产的。还制备了一系列稠合的氧杂环丁烷衍生物29a-c和一个氧代-环壬烯31。对环戊烯5b进行一系列的氢化，NBS溴化处理，然后用锌粉处理以提供扩环产物35。当先用NBS处理环六环化合物8，再用锌粉处理后，这样的扩环就不会发生，从而生成醛39通过用于使环戊烯衍生物5b断裂的相同反应顺序，将螺二氢呋喃衍生物19转化为醛42。

  DOI：

  10.1021/jo991392z
• 作为产物：
  描述：

  methyl 2,3-anhydro-4,6-O-benzilidene-α-D-mannopyranoside 在 N,N-二甲基丙烯基脲 、 二甲基亚砜 、 三乙胺 、 三氟乙酸酐 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 为溶剂， 反应 52.5h， 生成 methyl 4,6-O-benzylidene-3-deoxy-3-C-methyl-3-C-propenyl-α-D-erythro-hexopyranoside
  参考文献：
  名称：

  The Stereoselective Preparation of an Enantiomerically Pure Cyclopentane Using Intramolecular Aldol Cyclopentaannulation of a Glucose Derivative

  摘要：

  Methods for the annulation of carbohydrates have found extensive applications in organic synthesis. We report here a new protocol for the stereoselective conversion of glucose into an enantiomerically pure cyclopentane aldehyde 22. The readily available epoxide 15 was reacted with allyl Grignard to produce alcohol 16 in 86% yield. Swern oxidation followed by epimerization using triethylamine in N,N-dimethylformamide furnished the ketone 17 also in 86% yield. Regioselective deprotonation with lithium hexamethyldisilazane in THF was followed by methylation with methyl iodide and 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone as cosolvent to give 80% yield of ketone 18. Oxidation of ketone 18 by the Wacker procedure gave the 1,4-diketone 19 in 56% yield. Intramolecular aldol condensation occurred readily on treatment of diketone 19 with potassium tert-butoxide in toluene to furnish a 90% yield of enone 20. Treatment with N-bromosuccinimide produced the bromoester 21 in 72% yield, which was reduced to a mixture of aldehydes 22 (61%) and 23 (14%) with zinc shot in 2-propanol.

  DOI：

  10.1021/jo981225j

文献信息

• The synthesis and X-ray crystal structure of a cyclopentaannulated sugar; the first example of an intramolecular aldol cyclopentaannulation in carbohydrate chemistry
  作者：Andrew J. Wood、Paul R. Jenkins、John Fawcett、David R. Russell

  DOI：10.1039/c39950001567

  日期：——

  A 1,4-dicarbonyl compound 5 has been constructed by a sequence involving opening of a protected glucose epoxide with allyl magnesium chloride, alkylation and Wacker oxidation; the 1,4-dicarbonyl compound readily undergoes cyclisalion under basic conditions to produce a Cyclopentaannulated sugar derivative 6, whose structure was confirmed by X-ray crystallography.

  在碱性条件下，1,4-二羰基化合物很容易发生环化反应，生成环戊二烯糖衍生物 6。
• Stereoselective synthesis by double reductive amination ring closure of novel aza-heteroannulated sugars
  作者：Dominic M. Laventine、Michelle Davies、Emma L. Evinson、Paul R. Jenkins、Paul M. Cullis、Marcos D. García

  DOI：10.1016/j.tet.2009.04.011

  日期：2009.6

  We present here the stereoselective synthesis of a series of 2/3-N-pyrrolidine derivatives of glycosides produced by diastereoselective double reductive amination ring closure of 1,4-dicarbonyl compounds. These precursors were produced by tandem ozonolysis–reduction or Wacker oxidation of known alkenes. The potential of these new compounds as glycosidase inhibitors is illustrated for compound 16, showing

  我们在这里介绍了由1，4-二羰基化合物的非对映选择性双还原胺化闭环产生的一系列2 / 3- N-吡咯烷糖苷衍生物的立体选择性合成。这些前体是通过串联臭氧分解-还原或瓦克氧化已知烯烃而制得的。这些新化合物作为糖苷酶抑制剂的潜力在化合物16中得到了说明，显示出对β- d-半乳糖苷酶的选择性抑制。
• Stereoselective Preparation of Enantiomerically Pure Annulated Carbohydrates Using Ring-Closing Metathesis
  作者：David J. Holt、William D. Barker、Paul R. Jenkins、Jagannath Panda、Subrata Ghosh

  DOI：10.1021/jo991392z

  日期：2000.1.1

  Ring-closing metathesis has been applied to a series of glucose derivatives to produce cyclopentene derivatives 5a and 5b, cyclohexene derivatives 8 and 9, cycloheptene 12, and cyclooctene 14. Spirocyclic dihydrofurans 19, 26a, and 26b, along with dihydropyran 22, were also produced. A range of fused oxepine derivatives 29a-c and one oxo-cyclononene 31 were also prepared. Cyclopentene 5b was subjected

  闭环复分解已应用于一系列葡萄糖衍生物以产生环戊烯衍生物5a和5b，环己烯衍生物8和9，环庚烯12和环辛烯14。还与二氢吡喃22一起形成了环二氢呋喃19、26a和26b。生产的。还制备了一系列稠合的氧杂环丁烷衍生物29a-c和一个氧代-环壬烯31。对环戊烯5b进行一系列的氢化，NBS溴化处理，然后用锌粉处理以提供扩环产物35。当先用NBS处理环六环化合物8，再用锌粉处理后，这样的扩环就不会发生，从而生成醛39通过用于使环戊烯衍生物5b断裂的相同反应顺序，将螺二氢呋喃衍生物19转化为醛42。
• The Stereoselective Preparation of an Enantiomerically Pure Cyclopentane Using Intramolecular Aldol Cyclopentaannulation of a Glucose Derivative
  作者：Andrew J. Wood、David J. Holt、Maria-Consuelo Dominguez、Paul R. Jenkins

  DOI：10.1021/jo981225j

  日期：1998.11.1

  Methods for the annulation of carbohydrates have found extensive applications in organic synthesis. We report here a new protocol for the stereoselective conversion of glucose into an enantiomerically pure cyclopentane aldehyde 22. The readily available epoxide 15 was reacted with allyl Grignard to produce alcohol 16 in 86% yield. Swern oxidation followed by epimerization using triethylamine in N,N-dimethylformamide furnished the ketone 17 also in 86% yield. Regioselective deprotonation with lithium hexamethyldisilazane in THF was followed by methylation with methyl iodide and 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone as cosolvent to give 80% yield of ketone 18. Oxidation of ketone 18 by the Wacker procedure gave the 1,4-diketone 19 in 56% yield. Intramolecular aldol condensation occurred readily on treatment of diketone 19 with potassium tert-butoxide in toluene to furnish a 90% yield of enone 20. Treatment with N-bromosuccinimide produced the bromoester 21 in 72% yield, which was reduced to a mixture of aldehydes 22 (61%) and 23 (14%) with zinc shot in 2-propanol.