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2D Structure
Also known as: Grn163l, F60ne4xb53, 5'-(o-(2-hydroxy-3-((1-oxohexadecyl)amino)propyl) hydrogen phosphorothioate)-d(3'-amino-3'-deoxy-p-thio)(t-a-g-g-g-t-t-a-g-a-c-a-a), Grn163l peptide, Imetelstat [inn], Imetelstat [usan]
Molecular Formula
C148H211N68O53P13S13
Molecular Weight
4610  g/mol
InChI Key
LVZYXEALRXBLJZ-ISQYCPACSA-N
FDA UNII
F60NE4XB53

GRN163L is a novel anti-cancer drug. It has been characterized preclinically and shown to inhibit telomerase in human tumor cells of many cancer types (including lung, breast, prostate, liver, and early stage of human breast cancer), in both cell culture systems and animal models. Study of this drug shows the its potential utility in the treatment of patients with hematologic and solid tumor malignancies.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
N-[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-[[[(2S,3S,5R)-3-amino-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-sulfanylphosphoryl]amino]-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(2-amino-6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]amino]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphinothioyl]oxy-2-hydroxypropyl]hexadecanamide
2.1.2 InChI
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
2.1.3 InChI Key
LVZYXEALRXBLJZ-ISQYCPACSA-N
2.1.4 Canonical SMILES
CCCCCCCCCCCCCCCC(=O)NCC(COP(=S)(O)OCC1C(CC(O1)N2C=C(C(=O)NC2=O)C)NP(=S)(O)OCC3C(CC(O3)N4C=NC5=C(N=CN=C54)N)NP(=S)(O)OCC6C(CC(O6)N7C=NC8=C7N=C(NC8=O)N)NP(=S)(O)OCC9C(CC(O9)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OCC1C(CC(O1)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OCC1C(CC(O1)N1C=C(C(=O)NC1=O)C)NP(=S)(O)OCC1C(CC(O1)N1C=C(C(=O)NC1=O)C)NP(=S)(O)OCC1C(CC(O1)N1C=NC2=C(N=CN=C21)N)NP(=S)(O)OCC1C(CC(O1)N1C=NC2=C1N=C(NC2=O)N)NP(=S)(O)OCC1C(CC(O1)N1C=NC2=C(N=CN=C21)N)NP(=S)(O)OCC1C(CC(O1)N1C=CC(=NC1=O)N)NP(=S)(O)OCC1C(CC(O1)N1C=NC2=C(N=CN=C21)N)NP(=O)(OCC1C(CC(O1)N1C=NC2=C(N=CN=C21)N)N)S)O
2.1.5 Isomeric SMILES
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
2.2 Other Identifiers
2.2.1 UNII
F60NE4XB53
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Imetelstat

2.3.2 Depositor-Supplied Synonyms

1. Grn163l

2. F60ne4xb53

3. 5'-(o-(2-hydroxy-3-((1-oxohexadecyl)amino)propyl) Hydrogen Phosphorothioate)-d(3'-amino-3'-deoxy-p-thio)(t-a-g-g-g-t-t-a-g-a-c-a-a)

4. Grn163l Peptide

5. Imetelstat [inn]

6. Imetelstat [usan]

7. Imetelstat [who-dd]

8. Unii-f60ne4xb53

9. Grn 163l

10. Grn-163l

2.4 Create Date
2013-07-08
3 Chemical and Physical Properties
Molecular Weight 4610 g/mol
Molecular Formula C148H211N68O53P13S13
XLogP3-1.1
Hydrogen Bond Donor Count45
Hydrogen Bond Acceptor Count107
Rotatable Bond Count95
Exact Mass4607.8897749 g/mol
Monoisotopic Mass4606.8864201 g/mol
Topological Polar Surface Area2010 Ų
Heavy Atom Count295
Formal Charge0
Complexity11900
Isotope Atom Count0
Defined Atom Stereocenter Count39
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Indication

Investigated for use/treatment in leukemia (lymphoid) and solid tumors.


5 Pharmacology and Biochemistry
5.1 MeSH Pharmacological Classification

Enzyme Inhibitors

Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. (See all compounds classified as Enzyme Inhibitors.)


5.2 Mechanism of Action

GRN163L has been characterized preclinically and shown to inhibit telomerase in human tumor cells of many cancer types. It targets the template region, or active site, of telomerase. GRN163L does not exhibit antisense activity (binding to messenger RNA), but rather directly bind to the RNA component of telomerase at the active site of the enzyme, thereby acting like a conventional pharmaceutical drug. Inhibiting telomerase activity should result in telomere shortening and therefore cause aging and death of cancer cells.