开发了一种有效的四步方案,用于功能化茚满的构建。通过与溴酸酯(2-溴丙酸乙酯,溴乙酸乙酯或2-溴丁酸乙酯)的Reformatsky反应,将1-Tetralones转化为不饱和酯,然后将所形成的β-羟基酯脱水。酯部分的还原导致带有内环双键的均烯丙基醇。这些3-烯醇的氧化重排是通过三硝酸th(TTN)在AcOH / H 2 O的2:1混合物中进行的,导致环收缩产物的产率适中至非常好。研究了该序列的十四个例子。还研究了用TTN氧化由2-四氢萘酮制备的3-链烯醇。对于这些底物,未观察到环收缩反应。
开发了一种有效的四步方案,用于功能化茚满的构建。通过与溴酸酯(2-溴丙酸乙酯,溴乙酸乙酯或2-溴丁酸乙酯)的Reformatsky反应,将1-Tetralones转化为不饱和酯,然后将所形成的β-羟基酯脱水。酯部分的还原导致带有内环双键的均烯丙基醇。这些3-烯醇的氧化重排是通过三硝酸th(TTN)在AcOH / H 2 O的2:1混合物中进行的,导致环收缩产物的产率适中至非常好。研究了该序列的十四个例子。还研究了用TTN氧化由2-四氢萘酮制备的3-链烯醇。对于这些底物,未观察到环收缩反应。
Populene D Analogues: Design, Concise Synthesis and Antiproliferative Activity
作者:Kachi R. Kishore Kumar Reddy、Giovanna B. Longato、João E. de Carvalho、Ana L. T. G. Ruiz、Luiz F. Silva
DOI:10.3390/molecules17089621
日期:——
An efficient and concise synthesis of nine populene D analogues was performed using an iodine-catalyzed Prins cyclization as the key transformation. The antiproliferative activity of these new pyrans against several cancer cell lines was then investigated. Among them, an isochromene with moderate activity (mean logGI50 = 0.91) was found. Additionally, compounds with selectivity toward the tumor cell lines NCI-ADR/RES, OVCAR-3, and HT29 were discovered.
利用碘催化的普林斯环化作为关键转化,高效简洁地合成了九种罂粟碱 D 类似物。随后研究了这些新吡喃对几种癌细胞株的抗增殖活性。其中,发现了一种具有中等活性(平均 logGI50 = 0.91)的异色烯。此外,还发现了对肿瘤细胞系 NCI-ADR/RES、OVCAR-3 和 HT29 具有选择性的化合物。
Construction of functionalized indans by thallium(III) promoted ring contraction of 3-alkenols
作者:Helena M.C Ferraz、Luiz F Silva
DOI:10.1016/s0040-4020(01)01021-3
日期:2001.12
Reformatsky reaction with bromo-esters (ethyl 2-bromopropionate, ethyl bromoacetate or ethyl 2-bromobutyrate), followed by dehydration of the β-hydroxy-ester formed. Reduction of the ester moiety led to homoallylic alcohols bearing an endocyclic double bond. The oxidative rearrangement of these 3-alkenols was performed by thallium trinitrate (TTN) in a 2:1 mixture of AcOH/H2O, leading to the ring contraction
开发了一种有效的四步方案,用于功能化茚满的构建。通过与溴酸酯(2-溴丙酸乙酯,溴乙酸乙酯或2-溴丁酸乙酯)的Reformatsky反应,将1-Tetralones转化为不饱和酯,然后将所形成的β-羟基酯脱水。酯部分的还原导致带有内环双键的均烯丙基醇。这些3-烯醇的氧化重排是通过三硝酸th(TTN)在AcOH / H 2 O的2:1混合物中进行的,导致环收缩产物的产率适中至非常好。研究了该序列的十四个例子。还研究了用TTN氧化由2-四氢萘酮制备的3-链烯醇。对于这些底物,未观察到环收缩反应。