A Straightforward Approach to Protected (S)-Dolaphenine (Doe), the Unusual Amino Acid Component of Dolastatin 10
作者:Uli Kazmaier、Jens Burkhart
DOI:10.1055/s-0031-1289594
日期:2011.12
(S)-dolaphenine is described, starting from protected phenylalanyl glycine. The key step is the cyclization of an endothiodipeptide to give a thiazolyl triflate, which can be subjected to a palladium-catalyzed reduction with formic acid. dolaphenine - dolastatin - endothiopeptides - peptides - thiazoles - triflates
从受保护的苯丙氨酰基甘氨酸开始,描述了由Boc保护的(S)-多拉芬宁的简短的四步合成。关键步骤是硫代二肽的环化作用,生成噻唑基三氟甲磺酸盐,该硫唑基三氟甲磺酸盐可以用钯进行甲酸催化的还原反应。 多拉芬汀-多拉司汀-内硫肽-肽-噻唑-三氟甲磺酸