Asymmetric total synthesis of erythromcin. 1. Synthesis of an erythronolide A secoacid derivative via asymmetric induction
作者:R. B. Woodward、E. Logusch、K. P. Nambiar、K. Sakan、D. E. Ward、B. W. Au-Yeung、P. Balaram、L. J. Browne、P. J. Card、C. H. Chen
DOI:10.1021/ja00401a049
日期:1981.6
3210-3213 The specific incorporation per C4 unit, 3.3%, calculated from 13C NMR data (Table I), is identical with that obtained from I4C radioactivity measurements. The signals due to the I3C-enriched carbon atoms in the proton decoupled I3C NMR spectrum of labeled retronecine appear as multiplets (Table