Interference No. 103,675
in which
R represents hydrogen or acetyl,
R1 represents benzoyl or R2-O-CO- in which R2 represents
t—butyl, and
Ar represents phenyl or "- or $-naphthyl, said
phenyl or naphthyl being unsubstituted or substituted
by C1-4 alkyl, C1-4 alkoxy, halogen, or CF3, or Ar represents 2- or
3-thienyl or 2- or 3-furyl, said thienyl or furyl being
unsubstituted or substituted by halogen,
OR
A compound of the formula
in which
5
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Last modified: November 3, 2007