C07D 473/02
Heterocyclic compounds containing purine ring systems: with oxygen, sulphur, or nitrogen atoms
Official title: with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
C07D473/02 (Heterocyclic compounds containing purine ring systems: with oxygen, sulphur, or nitrogen atoms) appears on 1,485 US grants and 1,467 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,485
- Published applications
- 1,467
- Assignees
- 826
- Inventors
- 4,013
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 8 | 0 |
| 1983 | 19 | 0 |
| 1984 | 15 | 0 |
| 1985 | 25 | 0 |
| 1986 | 18 | 0 |
| 1987 | 16 | 0 |
| 1988 | 17 | 0 |
| 1989 | 23 | 0 |
| 1990 | 15 | 0 |
| 1991 | 22 | 0 |
| 1992 | 20 | 0 |
| 1993 | 15 | 0 |
| 1994 | 23 | 0 |
| 1995 | 22 | 0 |
| 1996 | 24 | 0 |
| 1997 | 32 | 0 |
| 1998 | 41 | 0 |
| 1999 | 28 | 0 |
| 2000 | 34 | 0 |
| 2001 | 37 | 0 |
| 2002 | 24 | 33 |
| 2003 | 40 | 76 |
| 2004 | 28 | 64 |
| 2005 | 27 | 65 |
| 2006 | 34 | 52 |
| 2007 | 27 | 50 |
| 2008 | 28 | 56 |
| 2009 | 43 | 63 |
| 2010 | 35 | 88 |
| 2011 | 40 | 82 |
| 2012 | 47 | 65 |
| 2013 | 50 | 67 |
| 2014 | 53 | 81 |
| 2015 | 63 | 82 |
| 2016 | 63 | 54 |
| 2017 | 50 | 57 |
| 2018 | 41 | 64 |
| 2019 | 64 | 64 |
| 2020 | 49 | 68 |
| 2021 | 56 | 54 |
| 2022 | 34 | 43 |
| 2023 | 18 | 46 |
| 2024 | 20 | 37 |
| 2025 | 28 | 27 |
| 2026 | 15 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- PIKfyve kinase inhibitors22 Sep 2026US 12,741,960 B2Acurastem Incorporated
- Tetrahydrococannabinolic acid cocrystals11 Aug 2026US 12,702,675 B2Manoira Corporation
- Biomimetic G-quartet compounds16 Jun 2026US 12,655,158 B2Centre National De La Recherche Scientifique
- Method of treating microbial infections2 Jun 2026US 12,642,804 B2The Regents of the University of California
- Anti-fibrotic compounds and use thereof19 May 2026US 12,630,501 B2Hadasit Medical Research Services and Development Ltd.
- Pyrazolopyrimidine derivatives as inhibitors of nlrp31 Oct 2026US 2026/0297092 A1Takeda Pharmaceutical Company Limited
- Novel inhibitors of pikfyve and methods using same1 Oct 2026US 2026/0297108 A1Tme Therapeutics Inc.
- Crystalline complexes between velagliflozin and selected co-crystal forming agents, methods for their preparation and the use thereof for preparing medicaments24 Sep 2026US 2026/0285825 A1Boehringer Ingelheim Vetmedica GmbH
- Small molecule for treatment of cancer of the appendix3 Sep 2026US 2026/0258054 A1Board of Regents, The University of Texas System
- Degrader compounds of qsox1 mrna27 Aug 2026US 2026/0250738 A9University of Florida Research Foundation, Inc.
Most cited
By later US patents
- Boronated nucleoside, nucleotide and oligonucleotide compounds, compositions and methods for using same547US 5,130,302 ABoron Bilogicals, Inc. · 1992
- Acyclic nucleoside analogs and oligonucleotide sequences containing them413US 5,576,427 ASterling Winthrop Inc. · 1996
- Substituted nitrogen heterocyclic derivatives and pharmaceutical use thereof182US 6,552,192 B1Ustau Experimentalni Botaniky AV-CR · 2003
- Inhibitors of human phosphatidylinositol 3-kinase delta181US 6,518,277 B1ICOS Corporation · 2003
- Quinazolinones as inhibitors of human phosphatidylinositol 3-kinase delta180US 7,932,260 B2ICOS Corporation · 2011