1,2,3,4,6,11-hexahydro-1(S),3(S),5,12-tetrahydroxy-3-hydroxymethyl-3,13-O-isopropylidene-6,11-naphthacene dione 、
Acetic acid (2S,3R,4S,6S)-3-azido-6-bromo-2-methyl-tetrahydro-pyran-4-yl ester 在
4 A molecular sieve 、 mercury dibromide 、
mercury(II) oxide 作用下,
以
二氯甲烷 为溶剂,
以96%的产率得到(S)-cis-1-O-(3-O-acetyl-4-azido-2,4,6-trideoxy-α-L-lyxo-hexopyranosyl)-1,2,3,4,6,11-hexahydro-1,3,5,12-tetrahydroxy-3-(hydroxymethyl)-3,13-O-isopropylidene-6,11-naphthacenedione