A new approach to the C28 fatty acid chain of the marine natural products schulzeines B and C: a concise diastereoselective total synthesis of(−)-schulzeine B
作者:Chao Yang、Yu-Hui Bao、Pan Liang、Jian-Liang Ye、Ai-E. Wang、Pei-Qiang Huang
DOI:10.1016/j.tet.2011.06.023
日期:2011.8
the marine natural products schulzeines B and C was established based on the l-tartaric acid derived C4 chiron 11 via successive 1,4-bis-chain elongation reactions and catalytic asymmetric hydrogenation. The chiral tricyclic core 8 was constructed via a diastereoselective Pictet–Spengler cyclization reaction (dr = 89:11) of the l-glutamic acid derived precursor 13. On this basis, a concise total synthesis
基于1-酒石酸衍生的C 4 chiron 11,通过连续的1,4-双链延长反应和催化不对称氢化作用,建立了对海洋天然产物舒尔西汀B和C的C 28脂肪酸链的对映选择性方法。手性三环核芯8是通过l-谷氨酸衍生的前体13的非对映选择性Pictet-Spengler环化反应(dr = 89:11)构建的。在此基础上,公开了简明的(-)-舒尔西汀B(5)的全合成。