6,8-dimethyl-9-(tetrahydropyran-2-yl)purine | 713140-74-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: 6,8-dimethyl-9-(tetrahydropyran-2-yl)purine
• 英文别名: 6,8-dimethyl-9(tetrahydro-2H-pyran-2-yl)purine；6,8-dimethyl-9-(oxan-2-yl)purine
• CAS: 713140-74-0
• 化学式: C₁₂H₁₆N₄O
• 分子量: 232.285
• InChiKey: BVTNBBKHJHQUCL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.14
• 重原子数：
  17.0
• 可旋转键数：
  1.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  52.83
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  6,8-dimethyl-9-(tetrahydropyran-2-yl)purine 在 Dowex 50WX₈ (H(+)) 作用下， 以 乙醇 为溶剂， 反应 1.0h， 以78%的产率得到6,8-二甲基-7H-嘌呤
  参考文献：
  名称：

  6,8-二氯嘌呤与苯基硼酸和甲基氯化镁的区域选择性交叉偶联反应中的二分法：6,8-二取代嘌呤的合成

  摘要：

  Pd催化的6,8-二氯-9-(四氢吡喃-2-基)嘌呤与1当量苯基硼酸的交叉偶联反应区域选择性地进行，得到8-氯-6-苯基嘌呤，而类似的Fe催化反应与甲基氯化镁得到6-氯-8-甲基嘌呤衍生物作为主要产物。两种类型的单氯嘌呤中间体都经过其他交叉偶联反应或亲核取代，得到 9-(四氢吡喃-2-基)-6,8-二取代的嘌呤，这些嘌呤很容易脱保护为 8-取代的 6-苯基嘌呤或 6-取代的嘌呤8-甲基嘌呤。与苄基氯化镁和苯基溴化镁进行的类似反应得到了低转化率和低选择性。

  DOI：

  10.1055/s-2004-816012
• 作为产物：
  描述：

  6-methyl-9-(tetrahydro-2-pyranyl)purine 、 碘甲烷 在 lithium diisopropyl amide 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 6,8-dimethyl-9-(tetrahydropyran-2-yl)purine
  参考文献：
  名称：

  Regioselective Metalation of 6-Methylpurines: Synthesis of Fluoromethyl Purines and Related Nucleosides for Suicide Gene Therapy of Cancer

  摘要：

  Metalation of 6-methyl-9-(tetrahydro-2H-pyran-2-yl)purine (10) with lithiating agents of varying basicities such as n-BuLi and LiHMDS in THF at - 78 degrees C resulted in metalation at both of the 6-CH3 moiety and the 8-CH position, irrespective of the molar equivalence of the base. On the other hand, a regioselective metalation at the 6-CH3 moiety of 10 was observed with NaHMDS or KHMDS, under similar conditions. Treatment of the potassium salts of 10 and of the protected riboside derivative 6-methyl-9-(beta-D-2,3,5-tri-O-tert-butyldimethylsilylribofuranosyl)purine (22) with N-fluorobenzenesulfonamide (NFSI) at - 78 degrees C gave the corresponding 6-fluoromethylpurine derivatives 11 and 23, respectively, in good yields. Deprotection of 11 and 23 under standard conditions gave 6-fluoromethylpurine (6-FMeP, 3) and 6-fluoromethyl-9-(beta-D-ribofuranosyl)purine (6-FMePR, 4), respectively, in high yield. Both 3 and 4 demonstrated cytotoxic activity against CCRF-CEM cells in culture. 6-FMePR is a good substrate for E. coli purine nucleoside phosphorylase (E. coli PNP) with a comparable substrate activity to that of the parent nucleoside, 6-methyl-9-(beta-D-ribofuranosyl)purine (&MePA 21). The cytotoxic activity of 6-FMeP along with the substrate activity of 6-FMePR with E. coli PNP meet the fundamental requirements for using 6-FMeP as a Potential toxin in PAT/prodrug based cancer gene therapy.

  DOI：

  10.1080/15257770903091938

文献信息

• Selective Metalation of 6-Methylpurines: Synthesis of 6-Fluoromethylpurines and Related Nucleosides
  作者：Abdalla E. A. Hassan、William B. Parker、Paula W. Allan、John A. Montgomery、John A. Secrist

  DOI：10.1081/ncn-120022625

  日期：2003.10

  A selective metalation at the 6-CH3 over C-8 of 6-methylpurine derivative 6 was observed with softer counter cation (Na+ or K+) of the base, while the harder Li+ showed no selectivity. In the presence of N-fluorobenzenesulfonamide (NFSI), this property was utilized for the synthesis of 6-fluoromethylpurine derivatives 4 and 5 as potential toxins for suicide gene therapy.
• Dichotomy in Regioselective Cross-Coupling Reactions of 6,8-Dichloropurines with Phenylboronic Acid and Methylmagnesium Chloride: Synthesis of 6,8-Disubstituted Purines
  作者：Michal Hocek、Dana Hocková、Hana Dvořáková

  DOI：10.1055/s-2004-816012

  日期：——

  Pd-catalyzed cross-coupling reaction of 6,8-dichloro-9-(tetrahydropyran-2-yl)purine with one equivalent of phenylboronic acid proceeded regioselectively to give 8-chloro-6-phenylpurine, while the analogous Fe-catalyzed reaction with methylmagnesium chloride gave the 6-chloro-8-methylpurine derivative as major product. Both types of the monochloropurine intermediates were subjected to other cross-coupling

  Pd催化的6,8-二氯-9-(四氢吡喃-2-基)嘌呤与1当量苯基硼酸的交叉偶联反应区域选择性地进行，得到8-氯-6-苯基嘌呤，而类似的Fe催化反应与甲基氯化镁得到6-氯-8-甲基嘌呤衍生物作为主要产物。两种类型的单氯嘌呤中间体都经过其他交叉偶联反应或亲核取代，得到 9-(四氢吡喃-2-基)-6,8-二取代的嘌呤，这些嘌呤很容易脱保护为 8-取代的 6-苯基嘌呤或 6-取代的嘌呤8-甲基嘌呤。与苄基氯化镁和苯基溴化镁进行的类似反应得到了低转化率和低选择性。
• Regioselective Metalation of 6-Methylpurines: Synthesis of Fluoromethyl Purines and Related Nucleosides for Suicide Gene Therapy of Cancer
  作者：Abdalla E. A. Hassan、William B. Parker、Paula W. Allan、John A. Secrist

  DOI：10.1080/15257770903091938

  日期：2009.8.11

  Metalation of 6-methyl-9-(tetrahydro-2H-pyran-2-yl)purine (10) with lithiating agents of varying basicities such as n-BuLi and LiHMDS in THF at - 78 degrees C resulted in metalation at both of the 6-CH3 moiety and the 8-CH position, irrespective of the molar equivalence of the base. On the other hand, a regioselective metalation at the 6-CH3 moiety of 10 was observed with NaHMDS or KHMDS, under similar conditions. Treatment of the potassium salts of 10 and of the protected riboside derivative 6-methyl-9-(beta-D-2,3,5-tri-O-tert-butyldimethylsilylribofuranosyl)purine (22) with N-fluorobenzenesulfonamide (NFSI) at - 78 degrees C gave the corresponding 6-fluoromethylpurine derivatives 11 and 23, respectively, in good yields. Deprotection of 11 and 23 under standard conditions gave 6-fluoromethylpurine (6-FMeP, 3) and 6-fluoromethyl-9-(beta-D-ribofuranosyl)purine (6-FMePR, 4), respectively, in high yield. Both 3 and 4 demonstrated cytotoxic activity against CCRF-CEM cells in culture. 6-FMePR is a good substrate for E. coli purine nucleoside phosphorylase (E. coli PNP) with a comparable substrate activity to that of the parent nucleoside, 6-methyl-9-(beta-D-ribofuranosyl)purine (&MePA 21). The cytotoxic activity of 6-FMeP along with the substrate activity of 6-FMePR with E. coli PNP meet the fundamental requirements for using 6-FMeP as a Potential toxin in PAT/prodrug based cancer gene therapy.