| http://www.w3.org/ns/prov#value | - A process for the preparation of a support of claim 1 comprising reacting a support of the formula ##STR38## wherein ???P and m have the above definitions with a compound of the formula ##STR39## wherein R is a protective group for a mono- or divalent amine and A and x1 have the above definitions in the presence of an activating agent and a tertiary base to obtain a support of the formula ##STR40#
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