Determination of the absolute configuration at the two cyclopropane moieties of plakoside A, an immunosuppressive marine galactosphingolipid
作者:Kenji Mori、Takuya Tashiro、Kazuaki Akasaka、Hiroshi Ohrui、Ernesto Fattorusso
DOI:10.1016/s0040-4039(02)00606-8
日期:2002.5
The absolute configuration of plakoside A (2S,3R,11R*,12S*)-2-[(2′′′R,5′′′Z,11′′′R*,12′′′S*)-2′′′-hydroxy-11′′′,12′′′-methylene-5′′′-docosenamido]-1-O-[2′-O-(3′′-methyl-2′′-butenyl)-β-d-galactopyranosyl]-11,12-methylene-1,3-docosanediol} was determined as 11S,12R,11′′′S,12′′′R by its degradation to two cyclopropane-containing fatty acids followed by their derivatization with a chiral reagent and subsequent
白果糖苷A (2 S,3 R,11 R *,12 S *)-2-[(2''' R,5''' Z,11''' R *,12''' S *)-2'''-羟基-11'',, 12'''-亚甲基-5''-二十二碳三烯基] -1- O- [2'- O-(3''-甲基-2' ′-丁烯基)-β-d-吡喃半乳糖基] -11,12-亚甲基-1,3-二十二烷二醇}通过降解为两个环丙烷而确定为11 S,12 R,11''' S,12''' R含脂肪酸,然后用手性试剂将其衍生化,然后对所得衍生物进行HPLC分析。