CJCU
The Synthesis of the Precursor of the Bicyclic--Enediyne 6-Sulfony-13-oxo-bicyclo[9.3.0]-tetradec-3,8-diyne(Ⅱ)
ZHI Yong-Gang, TENG You-Wei, ZHANG Liang-Fu, Just-George
Chem. J. Chinese Universities . 1999, (12): 1888 -1891 .