The invention relates to a small molecular
boron-10 carrying agent, a preparation method and application. The
structural formula of the
small molecule boron-10 carrying agent is shown as a formula (I). The invention also provides a preparation method of the small molecular
boron-10 carrying agent, which comprises the following steps: carrying out condensation connection on a
phenylboronic acid derivative and N-(2-aminoethyl)
maleimide hydrochloride, and covalently
coupling a boron
drug to obtain a first intermediate; n < 2 >-(((9H-
fluorene-9-yl) methoxy) carbonyl)-N < 6 >-(tert-butoxycarbonyl)-L-
lysine, N-(2-aminoethyl)
maleimide hydrochloride and a
phenylboronic acid derivative are subjected to condensation connection, and a second intermediate is obtained; carrying out esterification connection on a
selenium-containing compound and
a DNA repair inhibiting compound to obtain a third intermediate; and carrying out condensation connection on the second intermediate and the third intermediate, and connecting the first intermediate to obtain the
small molecule boron-10 carrying agent. The invention solves the problems of limited
treatment effect and difficulty in inhibiting
DNA damage repair in the existing BNCT. # imgabs0 # (I)