Belotecan

Belotecan

File:Belotecan.png
Systematic (IUPAC) name
(4S)-4-Ethyl-4-hydroxy-11-(2-(isopropylamino)ethyl)-1,12-dihydro-14H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H)-dione
Identifiers
CAS Number	256411-32-2
ATC code	none
PubChem	CID: 6456014
ChemSpider	4958253 Y
UNII	27Z82M2G1N Y
ChEMBL	CHEMBL2107315
Chemical data
Formula	C25H27N3O4
Molecular mass	433.50 g/mol
SMILES O=C\1N4\C(=C/C2=C/1COC(=O)[C@]2(O)CC)c3nc5c(c(c3C4)CCNC(C)C)cccc5
InChI InChI=1S/C25H27N3O4/c1-4-25(31)19-11-21-22-17(12-28(21)23(29)18(19)13-32-24(25)30)15(9-10-26-14(2)3)16-7-5-6-8-20(16)27-22/h5-8,11,14,26,31H,4,9-10,12-13H2,1-3H3/t25-/m0/s1 Y Key:LNHWXBUNXOXMRL-VWLOTQADSA-N Y
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Belotecan is a drug used in chemotherapy. It is a semi-synthetic camptothecin analogue with potential antitumor activity. Belotecan binds to and inhibits the activity of topoisomerase I, stabilizing the cleavable complex of topoisomerase I-DNA, which inhibits the religation of single-stranded DNA breaks generated by topoisomerase I; lethal double-stranded DNA breaks occur when the topoisomerase I-DNA complex is encountered by the DNA replication machinery, DNA replication is disrupted, and the tumor cell undergoes apoptosis. Topoisomerase I is an enzyme that mediates reversible single-strand breaks in DNA during DNA replication.