Diphenylmethyl (6R,7R)-7-phenylacetamido-3-(tetra-hydrofuran-2-yl)ceph-3-em-4-carboxylate | 141060-93-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: Diphenylmethyl (6R,7R)-7-phenylacetamido-3-(tetra-hydrofuran-2-yl)ceph-3-em-4-carboxylate
• 英文别名: benzhydryl (6R,7R)-8-oxo-3-(oxolan-2-yl)-7-[(2-phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
• CAS: 141060-93-7
• 化学式: C₃₂H₃₀N₂O₅S
• 分子量: 554.667
• InChiKey: TXOXABQAKHIPTJ-YSPRKPHLSA-N

物化性质

• 沸点：
  811.7±65.0 °C(Predicted)
• 密度：
  1.36±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  40
• 可旋转键数：
  9
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  110
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  Diphenylmethyl (6R,7R)-1-oxo-7-phenylacetamido-3-(tetrahydrofuran-2-yl) ceph-3-em-4-carboxylate 、 三氯化磷 以 N,N-二甲基甲酰胺 为溶剂， 生成 Diphenylmethyl (6R,7R)-7-phenylacetamido-3-(tetra-hydrofuran-2-yl)ceph-3-em-4-carboxylate
  参考文献：
  名称：

  Cephalosporins and homologues, preparations and pharmaceutical

  摘要：

  (1)式β-内酰胺类抗生素或其盐，其中R1为氢、甲氧基或甲酰胺基；R2为酰基；CO2R3为羧基或羧酸根离子，或R3为易于去除的羧基保护基团；R4代表最多四个取代基；X为S、SO、SO2、O或CH2；m为1或2；n为0，用于治疗细菌感染。

  公开号：

  US06001997A1

文献信息

• Cycloadditions of Cephalosporins. A Comprehensive Study of the Reaction of Cephalosporin Triflates with Olefins, Acetylenes, and Dienes To Form [2 + 2] and [4 + 2] Adducts
  作者：Richard L. Elliott、Neville H. Nicholson、Fiona E. Peaker、Andrew K. Takle、Christine M. Richardson、John W. Tyler、Janet White、Michael J. Pearson、Drake S. Eggleston、R. Curtis Haltiwanger

  DOI：10.1021/jo970176s

  日期：1997.7.1

  Novel polycyclic cephalosporins are formed by the reaction of cephalosporin triflates with various unsaturated compounds in the presence of Hunigs base. 2,3-Fused cyclobutane and cyclobutene cephems are obtained with olefins and acetylenes, respectively, whereas [4 + 2] cycloadducts are obtained with furan. The reaction has been rationalized by invoking the intermediacy of a strained 6-membered cyclic allene. The allene undergoes an orbital symmetry allowed concerted (pi)2(8), + (pi)2(a), cycloaddition with olefins and acetylenes and a (pi)4(s) + (pi)2(s) cycloaddition with furan. The regiochemistry of the [2 + 2] cycloadducts is independent of the substitution of the unsaturated component and of the oxidation state of the cephalosporin sulfur atom. However in the case of the [4 + 2] adducts, the sulfur oxidation state determines the regiochemistry of the addition. Carbacephalosporins also participate in this reaction with olefins but require a stronger base such as DBU. Thus the reaction described provides a facile, one-step procedure for the production of a rich variety of novel polycyclic cephalosporins.
• Cephalosporins and homologues, preparations and pharmaceutical
  申请人：——

  公开号：US06001997A1

  公开（公告）日：1999-12-14

  .beta.-Lactam antibiotics of formula (I) or a salt thereof, wherein R.sup.1 is hydrogen, methoxy or formamido; R.sup.2 is an acyl group; CO.sub.2 R.sup.3 is a carboxy group or a carboxylate anion, or R.sup.3 is a readily removable carboxy protecting group; R.sup.4 represents up to four substituents; X is S, SO, SO.sub.2, O or CH.sub.2 ; m is 1 or 2; and n is 0, useful in the treatment of bacterial infections. ##STR1##

  (1)式β-内酰胺类抗生素或其盐，其中R1为氢、甲氧基或甲酰胺基；R2为酰基；CO2R3为羧基或羧酸根离子，或R3为易于去除的羧基保护基团；R4代表最多四个取代基；X为S、SO、SO2、O或CH2；m为1或2；n为0，用于治疗细菌感染。