[EN] TRANS-CYCLOOCTENES WITH HIGH REACTIVITY AND FAVORABLE PHYSIOCHEMICAL PROPERTIES<br/>[FR] TRANS-CYCLOOCTÈNES À RÉACTIVITÉ ÉLEVÉE ET À PROPRIÉTÉS PHYSIOCHIMIQUES FAVORABLES
申请人:FOX JOSEPH
公开号:WO2022133225A1
公开(公告)日:2022-06-23
The present invention discloses a new class of frans-cyclooctenes (TCOs), "a- TCOs," that are prepared in high yield via stereocontrolled 1,2-additions of nucleophiles to trans-cyclooct-4-enone, which itself was prepared on large scale in two steps from 1,5-cyclooctadiene. Computational transition state models rationalize the diastereoselectivity of 1,2-additions to deliver a-TCO products, which were also shown to be more reactive than standard TCOs and less hydrophobic than even a trans- oxocene analog. Illustrating the favorable physicochemical properties of a-TCOs, a fluorescent TAMRA derivative in live HeLa cells was shown to be cell-permeable through intracellular Diels-Alder chemistry and to washout more rapidly than other TCOs.
本发明披露了一类新的反式环辛烯(TCOs),“a-TCOs”,通过对反-环辛-4-酮进行立体控制的1,2-亲核加成反应高产制备,该反-环辛-4-酮可从1,5-环辛二烯进行两步大规模制备。计算过渡态模型可以合理解释1,2-加成的对映选择性,以产生a-TCO产物,该产物也被证明比标准TCOs更具反应性,甚至比反-氧杂环辛烯类似物更不亲水。展示了a-TCOs的有利物理化学性质,荧光TAMRA衍生物在活体HeLa细胞中通过细胞内Diels-Alder化学反应具有细胞渗透性,并且比其他TCOs更快速地清除。