| abstract |
Compounds represented by formula (I) ##STR1## wherein one of Z 1 ', Z 2 ', Z 3 ' and Z 4 ' represents R, another one of Z 1 ', Z 2 ', Z 3 ' and Z 4 ' represents Z, and the remaining two moieties of Z 1 ', Z 2 ', Z 3 ' and Z 4 ' represents a hydrogen atom and/or a protective group, one of R and Z represents A 1 and the other represents A 2 , A 1 being an acyl group having 14 to 22 carbon atoms which does not contain a carboxylic group and A 2 being an acyl group having 2 to 14 carbon atoms and having one carboxyl group, X represents a hydrogen atom or a halogen atom (hereinafter referred to as Compound Ia); a 2,2'-anhydro product of Compound Ia wherein Z 2 ' represents a hydrogen atom (hereinafter referred to as Compound Ib); an arabinosylation product of Compound Ia (hereinafter referred to as Compound Ic); a deamination product of Compound Ia (hereinafter referred to as Compound Id); a 2'-deoxy product of Compound Id wherein Z 2 ' represents a hydrogen atom (hereinafter referred to as Compound Ie); a salt of Compound Ia, Ib, Ic, or Id or Ie having an A 2 group with a base (hereinafter referred to as Compound If); and a salt of Compound Ia, Ib or Ic wherein Z 1 ' represents a hydrogen atom with an acid (hereinafter referred to as Compound Ih); and processes for preparing the same. |