benzyl 3-hydroxymethyl-O2-[2-(methoxycarbonyl-methyl-amino)-α-L-2-deoxy-glucopyranosyl]-α-L-5-deoxy-lyxofuranoside 、
对硝基苯基氯甲酸酯 、
2,2-二甲氧基丙烷 生成 (4a
S)-6
c-((5
R)-8
t-benzyloxy-2,2,6
c-trimethyl-(5
rO)-1,3,7-trioxa-spiro[4.4]non-9
c-yloxy)-2,2,7-trimethyl-(4a
r,6a
t,9a
c,9b
t)-hexahydro-[1,3]dioxino[4',5':5,6]pyrano[3,4-
d]oxazol-8-one