| 摘要 |
<p>This invention is in the field of the chemistry of targeting anticancer anthracycline derivatives. More particularly, it concerns doxorubicin (DOX) or its daunosamine modified derivatives (DM-DOX) linked covalently to analogs of peptide hormones such as LH-RH, bombesin and somatostatin. These covalent conjugates are targeted to various tumors bearing receptors for the peptide hormone analogs. The compounds of this invention are represented by the General Formula: Q14-O-R-P wherein Q has general formula (II) wherein: Q14 signifies a Q moiety with a side chain at the 14 position; R- is H or -C(O)-(CH¿2?)n-C(O)- and n = 0-7; R' is NH2 or an aromatic, saturated or partially saturated 5- or 6-membered heterocyclic compound having at least one ring nitrogen and optionally having a butadiene moiety bonded to adjacent carbon atoms of said ring to form a bicyclic system; P is H or a peptide moiety, suitably an LHRH, somatostatin or bombesin analogs. Nevertheless where R' is NH2, then R and P are other than H. When R and P are H, then R' is other than NH2. A novel synthetic reaction has been discovered in the course of this work to form partially saturated heterocyclic moieties from vicinal and disjunct i.e., α,β- or α,η-hydroxy primary amines. Q1 is DOX; Q2 is 3'-deamino-3'-(pyrrolidine-1''-yl)-doxorubicin (AN 181); Q3 is 3'-deamino-3'-(isoindoline-1''-yl)-doxorubicin (AN 184); Q4 is 3'-deamino-3'-(3''-pyrroline-1''-yl)-doxorubicin (AN 185); Q5 is 3'-deamino-3'-(3''-pyrrolidone-1''-yl)-doxorubicin (AN 191); Q6 is 3'-deamino-3'-(2''-pyrroline-1''-yl)-doxorubicin (AN 201); Q7 is 3'-deamino-3'-(3''-piperidone-1''-yl)-doxorubicin (AN 195); Q8 is 3'-deamino-3'-(1'',3''-tetrahydropyridine-1''-yl)-doxorubicin (AN 205). Q1?14¿gL is AN 152; Q¿6?14gL is AN 207; Q¿1?14gS is AN 162; Q¿6?14gS is AN 238; Q¿1?14gB is AN 160; Q¿6?14gB is AN 215.</p> |
