Preferred conformation of C-glycosides. 11. C-Sucrose: new practical synthesis, structural reassignment, and solid-state and solution conformation of its octaacetate
作者:Daniel J. O'Leary、Yoshito Kishi
DOI:10.1021/jo00054a006
日期:1993.1
The stereochemistry of C-sucrose, previously reported from this laboratory, was revised as epi-C.2'-C-sucrose (5) from H-1 NOE measurements on octaacetates 2 and 6 and an X-ray analysis of 2. A new, stereospecific, and practical synthesis of C-sucrose (1) was developed. The solid-state conformation and solution behavior of the octaacetate 2 of C-sucrose were compared with the corresponding octaacetate 4 of parent sucrose.