(1'S,2'R)-bicyclomycin | 158849-68-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (1'S,2'R)-bicyclomycin
• 英文别名: BICOZAMYCIN；(1S,6R)-6-hydroxy-5-methylidene-1-[(1S,2R)-1,2,3-trihydroxy-2-methylpropyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione
• CAS: 158849-68-4
• 化学式: C₁₂H₁₈N₂O₇
• 分子量: 302.284
• InChiKey: WOUDXEYYJPOSNE-BWWFWGKFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.9
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  148
• 氢给体数：
  6
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (1'S,2'R)-bicyclomycin 、 乙硫醇 生成 (1S,6R)-5-Ethylsulfanylmethyl-6-hydroxy-1-((1S,2R)-1,2,3-trihydroxy-2-methyl-propyl)-2-oxa-7,9-diaza-bicyclo[4.2.2]decane-8,10-dione 、 (1S,2S,3R,6S,7R)-7-Ethylsulfanylmethyl-2,3,6-trihydroxy-3-methyl-5,10-dioxa-11-aza-tricyclo[5.3.3.0^1,6]tridecane-12,13-dione
  参考文献：
  名称：

  The role of the C-1 triol group in bicyclomycin

  摘要：

  对抗生素双环霉素和三种 C-1 三醇修饰衍生物的化学、生化和生物活性进行比较后发现，这四种化合物都能拦截硫醇，但只有双环霉素能有效抑制转录终止因子 rho，并具有显著的抗菌活性，这表明 C-1 三醇基团的立体化学和化学结构在药物识别过程中起到了关键作用。

  DOI：

  10.1039/c39940001343
• 作为产物：
  描述：

  (1S,2S,3R,7R)-2,7-Dihydroxy-3-hydroxymethyl-3-methyl-8-methylene-4,11-dioxa-6,12-diaza-tricyclo[5.4.2.0^1,5]tridec-5-en-13-one 在 硫酸 作用下， 以 四氢呋喃 为溶剂， 生成 (1'S,2'R)-bicyclomycin
  参考文献：
  名称：

  The role of the C-1 triol group in bicyclomycin

  摘要：

  对抗生素双环霉素和三种 C-1 三醇修饰衍生物的化学、生化和生物活性进行比较后发现，这四种化合物都能拦截硫醇，但只有双环霉素能有效抑制转录终止因子 rho，并具有显著的抗菌活性，这表明 C-1 三醇基团的立体化学和化学结构在药物识别过程中起到了关键作用。

  DOI：

  10.1039/c39940001343

文献信息

• Chemical, biochemical, and biological studies on select C1 triol modified bicyclomycins
  作者：Zhuming Zhang、Harold Kohn

  DOI：10.1021/ja00101a001

  日期：1994.11

  To determine the importance of the C(1) triol group to bicyclomycin (1)-mediated transformations we prepared the bicyclomycin diastereomers 6 (C(1')-R, C(2')-S) and 7 (C(1')-S, C(2')-R), in which the stereochemical configuration at C(1') and C(2') in the triol group in 1 (C(1')-S, C(2')-S) was reversed, and the C(1') ketone analogue 8 (C(2')-S), in which the stereogenic center at C(1') in 1 was removed. Synthesis of 6 and 8 proceeded from C(1') ketobicyclomycin C(2'), C(3') acetonide (10). Reduction (NaBH4, CeCl3) of 10 produced a diastereomeric mixture, that, after separation and removal of the acetonide protecting group, gave 6. Correspondingly, deprotection of 10 gave 8. Bicyclomycin analogue 7 was prepared by dissolving the known bicyclomycin C(2'), C(3') epoxide (13) in dilute methanolic sulfuric acid; this process produced the novel [O(9)-C(2')]cyclized bicyclomycin (14). Compound 14 formed with inversion of the C(2') center. Subsequent aqueous acid hydrolysis yielded 7. Data documenting the proposed reaction pathways and structures for compounds 6-8 are presented. The stability of bicyclomycin analogues 6-8 and 1 in deuterium oxide (pD 5.6-5.8, 7.4, 9.2-9.4) and in DMF-d(7) solutions were examined. Compounds 7 and 8 were stable under these conditions (room temperature, 14 days), whereas bicyclomycin underwent noticeable change only in basic deuterium oxide. Correspondingly, 6 was rapidly converted (t(1/2) < 30 h) to a new set of products in both acidic and basic deuterium oxide as well as in DMF-d(7). The facility of these conversions have been attributed in part to the role of the C(1) triol substituent in the ring opening of the C(6) hemiketal group in 6. All three bicyclomycin analogues reacted with ethanethiol at the C(5)-C(5a) exomethylene unit at rates comparable to 1 in buffered (''pH'' 8.0-8.5) THF-H2O (3:1) mixtures. The products generated from 6 and 7 were similar to those previously determined for 1, except for the configuration of the C(1') and C(2') substituents, whereas 8 yielded the novel piperidine adduct 33. The ethanethiol-8 reaction proceeded easily in spite of earlier projections that the C(1') hydroxyl group in bicyclomycin was required for exomethylene modification. Similarly the corresponding C(2'), C(3') acetonide of 8, 10, readily underwent reaction with ethanethiol. Significantly, compounds 6 and 7 only partially (25-35%) inhibited rho-dependent hydrolysis of ATP at the concentration levels observed to block ATPase activity by 1, and no inhibition of ATP hydrolysis was detected for 8. Our previous studies established that the primary site of bicyclomycin action in Escherichia coli is the cellular protein transcription termination factor rho. Similarly, none of the three compounds exhibited antibiotic activity at a concentration of 1200 mu g/mL, using a filter disc assay. These cumulative results suggested that key interactions existed between the C(1) triol group in bicyclomycin and the antibiotic binding site in rho, which are necessary for drug utilization and function.
• The role of the C-1 triol group in bicyclomycin
  作者：Zhuming Zhang、Harold Kohn

  DOI：10.1039/c39940001343

  日期：——

  Comparison of the chemical, biochemical, and biological activities of the antibiotic, bicyclomycin, with three C-1 triol modified derivatives demonstrated that all four compounds intercepted thiols but only bicyclomycin effectively inhibited the transcription termination factor rho and possessed significant antimicrobial activity, indicating that the stereochemical and chemical structure of the C-1 triol group played a key role in the drug recognition process.

  对抗生素双环霉素和三种 C-1 三醇修饰衍生物的化学、生化和生物活性进行比较后发现，这四种化合物都能拦截硫醇，但只有双环霉素能有效抑制转录终止因子 rho，并具有显著的抗菌活性，这表明 C-1 三醇基团的立体化学和化学结构在药物识别过程中起到了关键作用。