Total synthesis of (−)-jaspine B and its 4-epi-analogue from d-xylose
摘要:
The total synthesis of the HCl salts of (-)-jaspine B ent-1 and its 4-epi-congener ent-4 was accomplished starting from the common template 13 derived from D-xylose. The cornerstone of our synthesis was [3,3]-heterosigmatropic rearrangements, which effectively provided scaffolds with a chiral amino group. A subsequent Wittig olefination installed a C-14 alkyl side chain and acid-mediated ring-closing reaction established the tetrahydrofuran core. (C) 2014 Elsevier Ltd. All rights reserved.
Total synthesis of (−)-jaspine B and its 4-epi-analogue from d-xylose
摘要:
The total synthesis of the HCl salts of (-)-jaspine B ent-1 and its 4-epi-congener ent-4 was accomplished starting from the common template 13 derived from D-xylose. The cornerstone of our synthesis was [3,3]-heterosigmatropic rearrangements, which effectively provided scaffolds with a chiral amino group. A subsequent Wittig olefination installed a C-14 alkyl side chain and acid-mediated ring-closing reaction established the tetrahydrofuran core. (C) 2014 Elsevier Ltd. All rights reserved.