| http://www.w3.org/ns/prov#value | - amino; and in case -A- is other than C.sub.1-6alkanediyl then R.sub.6 may also be C.sub.1-6alkyl, Het.sup.1C.sub.1-4alkyl or aminoC.sub.1-4alkyl; whereby each of the amino groups may optionally be substituted; R.sub.13 is H, C.sub.1-6-alkyl, optionally
|
