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This suggested that there was tight post- transcriptional control of LXRα expression by homeostatic miR-155 in response to a stressor such as hypoxia in normal fibroblasts that was lost in IPF fibroblasts, potentially contributing to the deregulated LXRα activity. |
至尊木蟲 (著名寫手)
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This suggested that there was tight post- transcriptional control of LXRα expression by homeostatic miR-155 in response to a stressor such as hypoxia in normal fibroblasts that was lost in IPF fibroblasts, potentially contributing to the deregulated LXRα activity. 這顯示,LXRα的表達是通過自身穩(wěn)態(tài)調(diào)控的miR-155以轉(zhuǎn)錄后調(diào)控機制所嚴格控制的,在正常成纖維細胞中,該機制對例如缺氧之類的應(yīng)激源響應(yīng),但這個響應(yīng)能力在特發(fā)性肺纖維化病人的成纖維細胞中缺失,這可能與 LXRα活性失控有關(guān)。 |

新蟲 (初入文壇)
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1-chloroethyl chloroformate introduced by Olofson and co-wokers,effects the selective ,high yielding dealkylation of tertiary amines 發(fā)自小木蟲Android客戶端 |
新蟲 (初入文壇)
新蟲 (初入文壇)
新蟲 (初入文壇)
新蟲 (初入文壇)
至尊木蟲 (著名寫手)
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由Olofson和同事引入的1-氯乙基氯甲酸酯可以選擇性和高效地將叔胺脫去烷基。用1,2-二氯乙烷作溶劑,在加熱迴流條件下胺反應(yīng)物(2)與ᅳ當(dāng)量1-氯乙基氯甲酸酯反應(yīng)ᅳ小時形成ACE-哌嗪。對這個制備(應(yīng)用)1-氯乙基氯甲酸酯是比相應(yīng)的氯甲酸丙烯更好的選擇,因為整體反應(yīng)條件較溫和,產(chǎn)率也高些。其他氮取代取基團也可以很容易被脫去,按照以下順序排列:甲苯基>烯丙基, 叔烷>>S-烷基>甲基>伯胺上的烷基>>哌嗪開環(huán)反應(yīng)。芳香胺脫烷基可行,但需要較高的溫度。乙酸基和烷氧羰基基團對此反應(yīng)條件是穩(wěn)定的。 |

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