Facile and efficient addition of terminal alkynes to benzotriazole esters: synthesis of d-erythro-sphingosine using ynones as the key intermediate
作者:José Antonio Morales-Serna、Alejandro Sauza、Gabriela Padrón de Jesús、Rubén Gaviño、Gustavo García de la Mora、Jorge Cárdenas
DOI:10.1016/j.tetlet.2013.10.082
日期:2013.12
From the perspective of synthesis, ynones are compounds of considerable interest because of their occurrence in a wide variety of biologically active molecules and as key synthetic intermediates. In this context, a facile and highly efficient synthesis of ynones was developed based on the high reactivity of benzotriazole esters formed in situ. Lithium acetylides can alkylate various carboxylic acids
从合成的角度来看,炔酮是令人关注的化合物,因为它们存在于多种生物活性分子中,并作为关键的合成中间体。在这种情况下,基于原位形成的苯并三唑酯的高反应性,开发了一种容易且高效的炔酮合成方法。乙炔锂可将各种羧酸烷基化,收率范围为60%至92%。为了确定我们的方法是用于合成复杂的生物相关分子,我们合成D-有用赤-sphingosine四个步骤,并与L-丝氨酸33%的总收率。