作者:Yuto Yamaberi、Ryo Eto、Tomohiro Umeno、Takuma Kato、Mitsunobu Doi、Hidetomo Yokoo、Makoto Oba、Masakazu Tanaka
DOI:10.1021/acs.orglett.1c01291
日期:2021.6.4
A chiral cyclic α,α-disubstituted α-amino acid, (S)-(−)-cucurbitine, which has a pyrrolidine ring with a chiral center at the α-position, was synthesized, and its homopeptides were prepared. (S)-(−)-Cucurbitine homopeptides with a Boc-protecting group formed helical structures with slight control of the helical screw sense to the left-handed form. The state of the pyrrolidine ring in (S)-(−)-cucurbitine
合成了手性环状α,α-二取代α-氨基酸( S )-(-)-葫芦素,其具有在α-位具有手性中心的吡咯烷环,并制备了其同肽。( S )-(-)-带有 Boc 保护基团的葫芦素同肽形成螺旋结构,稍微控制左旋形式的螺旋螺旋感。( S )-(-)-葫芦素中吡咯烷环的状态对于控制其同肽的螺旋结构和螺旋螺旋意义很重要。