methyl (3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxole-5-carboxylate | 126694-09-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl (3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxole-5-carboxylate
• 英文别名: methyl (3aR,5S,6aR)-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxole-5-carboxylate
• CAS: 126694-09-5
• 化学式: C₉H₁₄O₅
• 分子量: 202.207
• InChiKey: ZWEPQRRHDMLYIE-SHYZEUOFSA-N

物化性质

• 沸点：
  238.7±35.0 °C(Predicted)
• 密度：
  1.174±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.89
• 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 (3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxole-5-carboxylate 、 [(2R)-2-methylbut-3-enyl]sulfonylbenzene 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 以79%的产率得到
  参考文献：
  名称：

  Total Synthesis of Brevetoxin A: Part 1: First Generation Strategy and Construction of BCD Ring System

  摘要：

  Discussed herein is our first generation strategy for the total synthesis of brevetoxin A. This approach relies upon dissection of the molecule at the nine-membered ring site (ring E), A Wittig coupling of requisite polycyclic fragments 3 and 4 followed by hydroxy dithioketal cyclization was expected to furnish the polycyclic framework of brevetoxin A (1). Intermediate 8 was anticipated to be a valid synthetic precursor to phosphonium salt 3, and its synthesis was accomplished by a bis(lactonization)/thionolactone formation/functionalization sequence. In order to test our synthetic strategy, the synthesis of an advanced model system (36) was attempted. Aldehyde 38 and phosphonium salt 37 were successfully synthesized and coupled through a:Wittig reaction. Unfortunately, the planned hydroxy dithioketal cyclization to form the crucial nonacene (ring E) did not proceed as anticipated and this synthetic approach was discontinued.

  DOI：

  10.1002/(sici)1521-3765(19990201)5:2<599::aid-chem599>3.0.co;2-n
• 作为产物：
  描述：

  3-deoxy-1,2;5,6-di-O-isopropylidene-α-D-glucofuranoside 在 4-二甲氨基吡啶 、 ruthenium(IV) oxide 、 sodium tetrahydroborate 、 sodium periodate 、 乙醇 、 溶剂黄146 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 甲醇 、 氯仿 、 水 、 乙腈 为溶剂， 反应 58.0h， 生成 methyl (3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxole-5-carboxylate
  参考文献：
  名称：

  TLR7 AGONISTS

  摘要：

  本发明涉及根据式I的TLR7激动剂及其在治疗癌症和传染病等疾病中的应用。

  公开号：

  US20210155652A1

文献信息

• Structure-Activity Relationships of 9-Alkyladenine and Ribose-Modified Adenosine Derivatives at Rat A3 Adenosine Receptors
  作者：Kenneth A. Jacobson、Suhaib M. Siddiqi、Mark E. Olah、Xiao-duo Ji、Neli Melman、Kamala Bellamkonda、Yacov Meshulam、Gary L. Stiles、Hea O. Kim

  DOI：10.1021/jm00010a017

  日期：1995.5

  9-Alkyladenine derivatives and ribose-modified N-6-benzyladenosine derivatives were synthesized in an effort to identify selective ligands for the rat A(3) adenosine receptor and leads for the development of antagonists. The derivatives contained structural features previously determined to be important for A(3) selectivity in adenosine derivatives, such as an N-6-(3-iodobenzyl) moiety, and were further substituted at the 2-position with halo, amino, or thio groups. Affinity was determined in radioligand binding assays at rat brain A(3) receptors stably expressed in Chinese hamster ovary (CHO) cells, using [I-125]]AB-MECA (N-6-(4-amino-3-iodobenzyl)adenosine-5'-(N-methyluronamid)), and at rat brain A(1) and A(2a) receptors using [H-3]-N-6-PIA ((R)-N-6-phenylisopropyladenosine) and [H-3]CGS 21680 (2-[[[4-(2-carboxyethyl)-phenyl]ethyl]amino]-5'-(N-ethylcarbamoyl)adenosine), respectively. A series of N-6-(3-iodobenzyl) 2-amino derivatives indicated that a small 2-alkylamino group, e.g., methylamino, was favored at A(3) receptors. N-6-(3-Iodobenzyl)-9-methyl-2-(methylthio)adenine was 61-fold more potent than the corresponding 2-methoxy ether at A(3) receptors and of comparable affinity at A(1) and A(2a) receptors, resulting in a 3-6-fold selectivity for A(3) receptors. A pair of chiral N-6-(3-iodobenzyl) 9-(2,3-dihydroxypropyl) derivatives showed stereoselectivity, with the R-enantiomer favored at A(3) receptors by 5.7-fold. 2-Chloro-9-(beta-D-erythrofuranosyl)-N-6-(3-iodobenzyl)adenine had a K-i value at A(3) receptors of 0.28 mu M. 2-Chloro-9-[2-amino-2,3-dideoxy-beta-D-5-(methylcarbamoyl)-arabinofuranosyl]-N-6-(3-iodobenzyl)adenine was moderately selective for A(1) and A(3) VS A(2a) receptors. A 3'-deoxy analogue of a highly A(3)-selective adenosine derivative retained selectivity in binding and was a full agonist in the inhibition of adenylyl cyclase mediated via cloned rat A(3) receptors expressed in CHO cells. The 3'-OH and 4'-CH2OH groups of adenosine are not required for activation at A(3) receptors. A number of 2',3'-dideoxyadenosines and 9-acyclic-substituted adenines appear to inhibit adenylyl cyclase at the allosteric ''P'' site.
• TLR7 AGONISTS
  申请人：Primmune Therapeutics, Inc.

  公开号：US20210155652A1

  公开（公告）日：2021-05-27

  The present invention relates to TLR7 agonists according to Formula I and their use in the treatment of diseases such as cancer and infectious disease.

  本发明涉及根据式I的TLR7激动剂及其在治疗癌症和传染病等疾病中的应用。
• Total Synthesis of Brevetoxin A: Part 1: First Generation Strategy and Construction of BCD Ring System
  作者：K. C. Nicolaou、Mark E. Bunnage、Daniel G. McGarry、Shuhao Shi、Patricia K. Somers、Paul A. Wallace、Xin-Jie Chu、Konstantinos A. Agrios、Janet L. Gunzner、Zhen Yang

  DOI：10.1002/(sici)1521-3765(19990201)5:2<599::aid-chem599>3.0.co;2-n

  日期：1999.2.1

  Discussed herein is our first generation strategy for the total synthesis of brevetoxin A. This approach relies upon dissection of the molecule at the nine-membered ring site (ring E), A Wittig coupling of requisite polycyclic fragments 3 and 4 followed by hydroxy dithioketal cyclization was expected to furnish the polycyclic framework of brevetoxin A (1). Intermediate 8 was anticipated to be a valid synthetic precursor to phosphonium salt 3, and its synthesis was accomplished by a bis(lactonization)/thionolactone formation/functionalization sequence. In order to test our synthetic strategy, the synthesis of an advanced model system (36) was attempted. Aldehyde 38 and phosphonium salt 37 were successfully synthesized and coupled through a:Wittig reaction. Unfortunately, the planned hydroxy dithioketal cyclization to form the crucial nonacene (ring E) did not proceed as anticipated and this synthetic approach was discontinued.