prov:value
| - A method of claim 2, wherein said compound is of the formula ##STR12## wherein B is a pharmacologically acceptable, selectively binding protein, sugar, or lipid residue, or ##STR13## is a single or double bond, X is --(CH2)n -- or when is a single bond, also --NHCO(CH2)n wherein n is an integer 0 to 4,m is 0, 1, or 2, R1 is C2-8 -alkyl substituted by hydroxy, C2-6 -alkanoyloxy, 2-hydroxy-2-(2,2-di
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