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Experimental cancer drugs
Imetelstat
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    Imetelstat

    Подписчиков: 0, рейтинг: 0
    Imetelstat
    Imetelstat.svg
    Imetelstat 3D.png
    Clinical data
    Other names GRN163L
    Legal status
    Legal status
    • Experimental
    Identifiers
    • N-[2-[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-[[[(2S,3S,5R)-3-amino-5-(6-aminopurin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(6-aminopurin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(4-amino-2-oxo-pyrimidin-1-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(6-aminopurin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(6-aminopurin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(6-aminopurin-9-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]amino]-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinothioyl]oxy-2-hydroxy-ethyl]heptadecanamide
    CAS Number
    PubChem CID
    DrugBank
    ChemSpider
    UNII
    Chemical and physical data
    Formula C148H210N68O53P13S13
    Molar mass 4610
    3D model (JSmol)
    • CCCCCCCCCCCCCCCC(=O)NCC(COP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N2C=C(C(=O)NC2=O)C)NP(=S)(O)OC[C@@H]3[C@H](C[C@@H](O3)N4C=NC5=C(N=CN=C54)N)NP(=S)(O)OC[C@@H]6[C@H](C[C@@H](O6)N7C=NC8=C7N=C(NC8=O)N)NP(=S)(O)OC[C@@H]9[C@H](C[C@@H](O9)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=C(C(=O)NC1=O)C)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=C(C(=O)NC1=O)C)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C(N=CN=C21)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C(N=CN=C21)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=CC(=NC1=O)N)NP(=S)(O)OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C(N=CN=C21)N)NP(=O)(OC[C@@H]1[C@H](C[C@@H](O1)N1C=NC2=C(N=CN=C21)N)N)S)O
    • InChI=1S/C148H211N68O53P13S13/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-97(218)160-34-69(217)38-255-282(242,295)256-51-95-74(25-102(261-95)207-37-68(4)136(221)191-148(207)229)195-274(234,287)249-45-89-78(29-106(264-89)212-61-175-115-124(155)165-56-170-129(115)212)199-277(237,290)252-48-92-81(32-109(267-92)215-64-178-118-132(215)183-143(158)187-139(118)224)202-280(240,293)254-50-94-82(33-110(269-94)216-65-179-119-133(216)184-144(159)188-140(119)225)203-281(241,294)253-49-93-79(30-107(268-93)213-62-176-116-130(213)181-141(156)185-137(116)222)200-278(238,291)246-42-86-72(23-100(260-86)205-35-66(2)134(219)189-146(205)227)193-272(232,285)245-41-85-73(24-101(259-85)206-36-67(3)135(220)190-147(206)228)194-273(233,286)248-44-88-77(28-105(263-88)211-60-174-114-123(154)164-55-169-128(114)211)198-276(236,289)251-47-91-80(31-108(266-91)214-63-177-117-131(214)182-142(157)186-138(117)223)201-279(239,292)250-46-90-76(27-104(265-90)210-59-173-113-122(153)163-54-168-127(113)210)197-275(235,288)244-40-84-71(22-99(258-84)204-20-19-96(150)180-145(204)226)192-271(231,284)247-43-87-75(26-103(262-87)209-58-172-112-121(152)162-53-167-126(112)209)196-270(230,283)243-39-83-70(149)21-98(257-83)208-57-171-111-120(151)161-52-166-125(111)208/h19-20,35-37,52-65,69-95,98-110,217H,5-18,21-34,38-51,149H2,1-4H3,(H,160,218)(H,242,295)(H2,150,180,226)(H2,151,161,166)(H2,152,162,167)(H2,153,163,168)(H2,154,164,169)(H2,155,165,170)(H,189,219,227)(H,190,220,228)(H,191,221,229)(H2,192,231,284)(H2,193,232,285)(H2,194,233,286)(H2,195,234,287)(H2,196,230,283)(H2,197,235,288)(H2,198,236,289)(H2,199,237,290)(H2,200,238,291)(H2,201,239,292)(H2,202,240,293)(H2,203,241,294)(H3,156,181,185,222)(H3,157,182,186,223)(H3,158,183,187,224)(H3,159,184,188,225)/t69?,70-,71-,72-,73-,74-,75-,76-,77-,78-,79-,80-,81-,82-,83+,84+,85+,86+,87+,88+,89+,90+,91+,92+,93+,94+,95+,98+,99+,100+,101+,102+,103+,104+,105+,106+,107+,108+,109+,110+,270?,271?,272?,273?,274?,275?,276?,277?,278?,279?,280?,281?,282?/m0/s1
    • Key:LVZYXEALRXBLJZ-ISQYCPACSA-N

    Imetelstat (development code GRN163L) is an experimental anticancer drug. The first telomerase inhibitor to enter clinical trials, As of early 2023, it was in Phase 2/3 trials for various cancer types.

    Chemically, imetelstat is a synthetic conjugate consisting of three parts: GRN163, a thio phosphoramide oligonucleotide, and a palmitoyl lipid group. GRN163 is the pharmacological component with telomerase inhibition. The palmitic acid moiety is conjugated via a phosphothioate linkage to the backbone of the antisense oligonucleotide. Telomere shortening and lower cell viability are observed after inhibition of telomerase activity in vitro. IC50 values ranged from 50 to 200nM for 10 different pancreatic cell lines.


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