Lanthionine Peptides by <i>S</i>-Alkylation with Substituted Cyclic Sulfamidates Promoted by Activated Molecular Sieves: Effects of the Sulfamidate Structure on the Yield
作者:Stefania De Luca、Giuseppe Digilio、Valentina Verdoliva、Pablo Tovillas、Gonzalo Jiménez-Osés、Jesús M. Peregrina
DOI:10.1021/acs.joc.9b02306
日期:2019.11.15
for preparing lanthionine peptides by a highly chemoselective and stereochemically controlled procedure is presented. It involves an S-alkylation reaction, promoted by activated molecular sieves, on chiral cyclic sulfamidates, both N-protected and unprotected. Of note, the reaction yield was high also for cyclic sulfamidates bearing a free amine group, while other strategies failed to achieve a ring-opening
提出了一种绿色高效的方法,该方法可通过高度化学选择性和立体化学控制的方法制备羊毛硫氨酸肽。它涉及由N-保护和未保护的手性环状氨基磺酸盐通过活化的分子筛促进的S-烷基化反应。值得注意的是,带有游离胺基的环状氨基磺酸盐的反应收率也很高,而其他策略未能与N-未保护的底物实现开环亲核反应。为了证明该方法的可行性,进行了天然羊毛硫抗生素haloduracinβ的硫醚环B模拟物的合成。