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CAS#: 1382979-44-3
Chemical Formula: C18H22N8O2
Exact Mass: 382.1866

Synonym: RG7666; RG-7666; RG 7666; GDC-0084; GDC0084; GDC 0084.

IUPAC/Chemical Name: 5-(6,6-dimethyl-4-morpholino-8,9-dihydro-6H-[1,4]oxazino[4,3-e]purin-2-yl)pyrimidin-2-amine

Company Roche
Description Phosphoinositide 3-kinase (PI3K) inhibitor
Molecular Target Phosphoinositide 3-kinase (PI3K)
Mechanism of Action Phosphoinositide 3-kinase (PI3K) inhibitor
Therapeutic Modality Small molecule
Latest Stage of Development Phase I
Standard Indication Brain cancer
Indication Details Treat progressive or recurrent high-grade glioma
Regulatory Designation
Partner Genentech Inc.
  • Originator Genentech
  • Class Antineoplastics; Small molecules
  • Mechanism of Action 1 Phosphatidylinositol 3 kinase inhibitors
  • 28 Jan 2015 Discontinued – Phase-I for Glioma in Spain (unspecified route)
  • 28 Jan 2015 Discontinued – Phase-I for Glioma in USA (unspecified route)
  • 01 Jan 2015 Genentech completes a phase I trial in Glioma in USA and Spain (NCT01547546)

GDC-0084, also known as RG7666, is a phosphatidylinositol 3-kinase (PI3K) inhibitor with potential antineoplastic activity. PI3K inhibitor GDC-0084 specifically inhibits PI3K in the PI3K/AKT kinase (or protein kinase B) signaling pathway, thereby inhibiting the activation of the PI3K signaling pathway. This may result in the inhibition of both cell growth and survival in susceptible tumor cell populations. Activation of the PI3K signaling pathway is frequently associated with tumorigenesis.


Abstract Image

An improved, efficient process with a significantly reduced process mass intensity (PMI) led to the multikilogram synthesis of a brain penetrant PI3K inhibitor GDC-0084. Highlights of the synthesis include a phase transfer catalyzed annulation in water, an efficient Suzuki-Miyaura cross-coupling of a chloropyrimidine with an arylboronic acid using a low palladium catalyst loading, and the development of a controlled crystallization to provide the API. The process delivered GDC-0084 with low levels of both impurities and residual metals.

Development of an Efficient, Safe, and Environmentally Friendly Process for the Manufacture of GDC-0084

Small Molecule Process Chemistry, Small Molecule Analytical Chemistry, Genentech, Inc., A Member of the Roche Group, 1 DNA Way, South San Francisco, California 94080, United States
Org. Process Res. Dev., Article ASAP
DOI: 10.1021/acs.oprd.6b00011
Publication Date (Web): March 11, 2016
Copyright © 2016 American Chemical Society





5-(6,6-Dimethyl-4-morpholino-8,9-dihydro-6H-[1,4]oxazino[4,3-e]purin-2-yl)pyrimidin-2-amine GDC-0084 

mp 211 °C; 1H NMR (500 MHz, DMSO-d6) δ 9.09 (s, 2H), 7.03 (s, 2H), 4.32–4.17 (m, 4H), 4.17–4.04 (m, 4H), 3.84–3.65 (m, 4H), 1.58 (s, 6H); 13C NMR (125 MHz, DMSO-d6) δ 163.8, 157.6, 154.2, 152.5, 151.3, 151.0, 120.3, 117.3, 73.7, 66.2, 57.8, 45.2, 41.5, 27.3. HRMS [M + H]+calcd for C18H22N8O2 383.1938; found 383.1945.

  1. The Discovery of Clinical Development Candidate GDC-0084, a Brain Penetrant Inhibitor of Class I Phosphoinositide 3-Kinases (PI3K) and mTOR.

    HeffronT.NdubakuC.SalphatiL.AlickeB.CheongJ.;DrobnickJ.EdgarK.GouldS.LeeL.LesnickJ.LewisC.NonomiyaJ.Pangj.PliseE.Sideris,S.WallinJ.WangL.ZhangX.OliveroA. ACS Med. Chem. Lett. 2016, , DOI: 10.1021/acsmedchemlett.6b00005

  2. 3.

    (a) Purine Derivatives Useful as PI3 Kinase Inhibitors. GoldsmithP.HancoxT. C.HudsonA.PeggN. A.KulagowskiJ. J.NadinA. J.PriceS. PCT Int. Appl. WO 2009053716 A1 Apr 30, 2009.

    (b) Preparation of Purine Derivatives with PI3K Inhibitory Activity and Methods of Use Thereof. CastanedoG.Chuckowree,I.FolkesA.SutherlinD. P.WanN. C. PCT Int. Appl. WO 2009146406 A1 Dec 3, 2009


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DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 30 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, Dr T.V. Radhakrishnan and Dr B. K. Kulkarni, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 30 year tenure till date Dec 2017, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 9 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 50 Lakh plus views on dozen plus blogs, He makes himself available to all, contact him on +91 9323115463, email, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 19 lakh plus views on New Drug Approvals Blog in 216 countries...... , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc

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