Derivatives of hydrazino-monosaccharides and aldohexoses which are useful as intermediates for preparing compounds or as compounds which lower the uric acid

Claim 1

A compound of the formula ##STR12## wherein s is a positive whole number of at most 2; D is =C(X)--, =C(NH 2 )-- or =N--; E is =C(Y)-- or =N--; F is =C(X)-- or =N--; the residue ##STR13## being aromatic; W is --H, --OH or --NH 2 ; X is --H, alkyl, phenyl or, together with Y, --N=CH--N=C(W)--; Y is --H, carbethoxy, cyano, carbamoyl, formylcarbamoyl, benzoylcarbamoyl or, together with one X, --C(W)=N--=N--; each of n, m and p is a positive whole number of at most 2, the sum of n+m+p is at least 4, and at least one of n, m and p is 1; each of R' 2 , r' 3 , r' 4 , r' 5 and R' 6 is, independently, --H or a member selected from the group consisting of alkyl, ethylenically-unsaturated hydrocarbyl, aryl, aralkyl, and cycloalkyl having from 3 to 6 ring carbon atoms with the proviso that at least one of R' 2 , R' 3 , R' 4 , R' 5 and R' 6 , which is present in the compound, has a meaning other than --H or two respective radicals R' 2 , R' 3 , R' 4 , R' 5 or R' 6 together denote alkylidene or benzylidene, each alkyl, including the alkyl of each aralkyl, each ethylenically-unsaturated hydrocarbyl and each alkylidene having up to seven carbon atoms; each aryl and the aryl of each aralkyl being substituted or unsubstituted phenyl, substituted or unsubstituted α-naphthyl or substituted or unsubstituted β-naphthyl, any substituent of a substituted phenyl, a substituted α-naphthyl or a substituted β-naphthyl being a member selected from the group consisting of alkyl having up to seven carbon atoms, halo, nitro, trifluoromethyl, alkoxy having up to seven carbon atoms, hydroxy, sulfo, sulfino, alkylsulfone having up to seven carbon atoms, alkoxycarbonyl having up to seven carbon atoms, alkylamino having up to seven carbon atoms, dialkylamino having up to seven carbon atoms and carbamoyl; or, when s denotes 2, an open-ring-form tautomer of such compound.