CN109265459B - 一种黄嘌呤的制备方法 - Google Patents
一种黄嘌呤的制备方法 Download PDFInfo
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- CN109265459B CN109265459B CN201811317147.8A CN201811317147A CN109265459B CN 109265459 B CN109265459 B CN 109265459B CN 201811317147 A CN201811317147 A CN 201811317147A CN 109265459 B CN109265459 B CN 109265459B
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- xanthine
- reaction
- diazotization
- guanine
- ammonia water
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
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- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
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CN201811317147.8A CN109265459B (zh) | 2018-11-07 | 2018-11-07 | 一种黄嘌呤的制备方法 |
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CN109265459A CN109265459A (zh) | 2019-01-25 |
CN109265459B true CN109265459B (zh) | 2020-09-11 |
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CN104649911B (zh) * | 2015-02-13 | 2017-01-04 | 衢州学院 | 对硝基苯酚的制备方法 |
CN105622610A (zh) * | 2016-03-28 | 2016-06-01 | 浙江诚意药业股份有限公司 | 一种黄嘌呤化合物的制备方法 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of xanthine Effective date of registration: 20220124 Granted publication date: 20200911 Pledgee: Shandong Changyi rural commercial bank Limited by Share Ltd. Pledgor: WEIFANG AOTONG PHARMACEUTICAL Co.,Ltd. Registration number: Y2022980000983 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230307 Granted publication date: 20200911 Pledgee: Shandong Changyi rural commercial bank Limited by Share Ltd. Pledgor: WEIFANG AOTONG PHARMACEUTICAL Co.,Ltd. Registration number: Y2022980000983 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |