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411iloveyo木虫 (小有名气)
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[求助]
求高手翻译两段 英译汉
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Three potent Sig-R binding compounds—10{20}, 10{22}, and 10{7} (which contains two basic nitrogen atoms)—were evaluated for their GPCR selectivity against 38 targets, and the results were incorporated in Table 1 (see SI Appendix for a heat map– formatted selectivity table). The three compounds displayed >86∶1 selectivities for the limited number of receptors for which binding was observed at all; an impressive result for compounds obtained in such an abbreviated structure-activity optimization exercise. The N-propyl derivative 10{22}, designed to eliminate binding arising from a pendant aryl-containing side chain, was particularly selective. Here, the only non-Sig-R binding was detected against the 5HT1A receptor (Ki ¼ 4;500 nM) as opposed to Sig-R 1 and Sig-R 2 (Ki values of 12 and 288 nM, respectively), As part of our efforts toward greater skeletal diversity, additional ring systems were introduced through modifications of the ketone carbonyl on scaffolds constructed by a Diels–Alder/ Schmidt reaction sequence.We applied the isocyanide multicomponent reaction (MCR) methodology developed by Shaabani et al. to transform the ketone carbonyl to the spirocyclic nitrogen heterocycles shown (Scheme 4) (45). This protocol smoothly incorporated three elements of diversity in a single operation to afford 44 heterocyclic analogues synthesized from the fragment pool in Scheme 4. This chemotype possesses an intriguing, complex spirocyclic molecular architecture not reported from any natural sources and incorporating three additional basic nitrogen sites. Although the MCR was not completely diastereoselective, a trend we had previously observed in the reductive amination at the same ketone carbonyl (39), the reaction did afford a dominant diastereomer that was assigned based on the X-ray crystal structure of the isolated compound 14{44}. Screening the full compound set for κ opioid, sigma 1, and sigma 2 receptor binding (Ki values) revealed a number of compounds with modest binding for these targets. Thus, compound 14{11} emerged as the most potent Sig-R binding candidate (Ki ¼ 867, 280 nM for sigma 1 and sigma 2, respectively) and compound 14{15} was found to possess the most potent κ opioid binding (Ki ¼ 407 nM) along with modest sigma 1 binding (Ki ¼ 1;158 nM). Sixteen of the 44 compounds were also evaluated for 5HT1A binding, with only compound 14{26} found to possess significant 5HT1A binding activity (Ki ¼ 431 nM). In addition, four compounds were screened against the full 43 GPCR assay panel as described previously for neostenine. The results showed this compound subset to be free from promiscuous binding, and compound 14{41} was discovered to possess selective adrenergic binding affinity (Ki ¼ 1;156, 7,588 nM for Alpha1A and Alpha1B, respectively). Representative structures of this chemotype and associated binding activity are shown in Scheme 4 (for complete data on all compounds, see SI Appendix). |
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8814402
至尊木虫 (职业作家)
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6楼2011-07-22 09:47:31
8814402
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2楼2011-07-22 08:40:34
8814402
至尊木虫 (职业作家)
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【答案】应助回帖
★ ★
sltmac(金币+2): 感谢应助~ 2011-07-22 16:06:21
sltmac(金币+2): 感谢应助~ 2011-07-22 16:06:21
| Three potent Sig-R binding compounds—10{20}, 10{22}, and 10{7} (which contains two basic nitrogen atoms)—were evaluated for their GPCR selectivity against 38 targets, and the results were incorporated in Table 1 (see SI Appendix for a heat map– formatted selectivity table). 评估了三种具有强Sig-R亲和性、结构中含有两个碱性氮原子的化合物10{20}, 10{22}和 10{7} 对38种靶标的GPCR选择性,结果总结在表1中。The three compounds displayed >86∶1 selectivities for the limited number of receptors for which binding was observed at all; an impressive result for compounds obtained in such an abbreviated structure-activity optimization exercise.在全部考察了亲和性的受体中,这三种化合物对有限数量的受体显示了>86∶1的选择性;对于通过简单构效优化获得的化合物而言,这是一个给人印象深刻的结果。The N-propyl derivative 10{22}, designed to eliminate binding arising from a pendant aryl-containing side chain, was particularly selective. 被设计以消除由于含芳基侧链而引起的亲和性的 N-丙基衍生物10{20} 表现了突出的选择性。Here, the only non-Sig-R binding was detected against the 5HT1A receptor (Ki ¼ 4;500 nM) as opposed to Sig-R 1 and Sig-R 2 (Ki values of 12 and 288 nM, respectively), 这里,检测到的唯一的非-Sig-R亲和性是针对与Sig-R 1和2截然相反的5HT1A。 |
3楼2011-07-22 09:09:02
8814402
至尊木虫 (职业作家)
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【答案】应助回帖
| As part of our efforts toward greater skeletal diversity, additional ring systems were introduced through modifications of the ketone carbonyl on scaffolds constructed by a Diels–Alder/ Schmidt reaction sequence.作为我们增加骨架多样性工作的一部分,通过Diels–Alder/ Schmidt 序列反应对酮羰基加以修饰引入额外的环系统。We applied the isocyanide multicomponent reaction (MCR) methodology developed by Shaabani et al. to transform the ketone carbonyl to the spirocyclic nitrogen heterocycles shown (Scheme 4) (45). 采用由Shaabani 等开发的MCR方法,我们将酮羰基化合物转化为螺环型氮杂环化合物,见示意图4. This protocol smoothly incorporated three elements of diversity in a single operation to afford 44 heterocyclic analogues synthesized from the fragment pool in Scheme 4. 通过恰当的将多样性所需的三个成分整合到一步操作中,实现通过示意图4中所示程序合成44中杂环类似物的目的。This chemotype possesses an intriguing, complex spirocyclic molecular architecture not reported from any natural sources and incorporating three additional basic nitrogen sites. 此化学型具有有趣的尚未见源自天然产物有关报道的复杂螺环分子结构, 含有三个额外的碱性氮点位。 |
4楼2011-07-22 09:31:08













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