| http://www.w3.org/ns/prov#value | - The novel process of the invention for the preparation of a support of formula I comprises reacting a support of the formula ##STR6## wherein ???P and m have the above definitions with a compound of the formula ##STR7## wherein R is a protective group for a mono- or divalent amine and A and x1 have the above definition in the presence of an activating agent and a tertiary base to obtain a support
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