- Preparation method of 4-aminopyridine compound
-
The invention discloses a preparation method of a 4-aminopyridine compound. The preparation method comprises the following steps: adding a 4-amino- 3-chloropyridine compound or a 4-amino-3, 5-dichloropyridine compound, potassium phosphate and a catalyst into a solvent, and reacting at 0-10 MPa and 0-100 DEG C for 4-12 hours. According to the preparation method of the 4-aminopyridine compound, therelated raw materials are easy to obtain or self-make, the cost is low, the preparation method is simple, the reaction efficiency is high, the raw material cost is low, and byproducts have economic value; meanwhile, the reaction involved in the invention has good universality and tolerance to functional groups.
- -
-
Paragraph 0026-0028; 0034-0042
(2021/02/06)
-
- Three nitrogen heterocycle containing 1, 2, 3 - thiadiazole - 5 - a amidine compounds and synthesis
-
The invention discloses an N-trisubstituted-1,2,3-thiadiazole-5-formamidine compound with three aromatic rings of general formula TDCA and a synthesis method of N-trisubstituted-1,2,3-thiadiazole-5-formamidine compound. The target compound of general formula TDCA is obtained by reacting a compound of general formula B and a compound of general formula A, wherein references of X and Y in the general formula A are the same as those in the general formula TDCA.
- -
-
Paragraph 0076; 0077; 0079
(2017/08/25)
-
- JTE013 ANALOGS AND METHODS OF MAKING AND USING SAME
-
JTE013 analogs having similar or greater stability relative to JTE013 are provided. Also provided are JTE013 analogs which can bind to both S1P2 and S IP5, some of which also have similar or greater stability relative to JTE013. In a
- -
-
Page/Page column 41-42
(2012/01/06)
-
- HETEROCYCLIC KINASE INHIBITORS
-
Compounds having the formula (I) are useful for inhibiting protein kinases. Also disclosed are methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.
- -
-
Page 135-136
(2010/02/08)
-
- Novel nucleosides and related processes, pharmaceutical compositions and methods
-
The invention provides novel nucleosides and related processes, pharmaceutical compositions, and methods. The novel nucleosides are useful in a wide variety of antiviral, antineoplastic, and antibacterial applications. Preferred embodiments of the instant invention include novel 2 halogen-substituted, 3 halogen-substituted, and 2′,3′dihalogen-substituted analogues of 3-deazaadenosine, and novel 3 halogen-substituted analogues of 3-deazaguanosine. Compounds of the instant invention, including 4-Amino-6-fluoro-1-(β-D-ribofuranosyl)imidazo[4,5-c]pyridine and 6-Amino-7-bromo-1,5-dihydro-1-β-D-ribofuranosylimidazo[4,5-c]pyridin-4-one, have exhibited potent antiviral and anticancer activity in vitro. The compounds are also useful in the concomitant treatment of bacterial infections associated with viral infections such as AIDS.
- -
-
Page/Page column 11; Figure 11
(2010/02/07)
-
- Selective hydrodechlorination of fluorinated arylamines
-
Chlorine-containing polyfluorinated anilines and meta-phenylenediamines undergo selective hydrodechlorination easily upon reduction by zinc in aqueous ammonia. A new approach is thus provided to synthetically valuable, partially fluorinated arylamines based on utilizing polyfluorochloroarenes, which are available as intermediates of perfluoroarene production from perchloroarenes. When chlorine atoms are present in positions both ortho and para to the amino group, para chlorine is initially eliminated. Based on this reaction, a one-pot synthesis of partially fluorinated 4-aminopyridines from 3,5-dichlorotrifluoro- and 3-chlorotetrafluoropyridine has been realized.
- Selivanova, Galina A.,Gurskaya, Larisa Yu.,Pokrovskii, Leonid M.,Kollegov, Vitaliy F.,Shteingarts, Vitaliy D.
-
p. 1829 - 1834
(2007/10/03)
-
- Synthesis of halogen-substituted 3-deazaadenosine and 3-deazaguanosine analogues as potential antitumor/antiviral agents
-
Various 2-halogen-substituted analogues (38, 39, 43 and 44), 3-halogensubstituted analogues (51 and 52), and 2′,3′ -dihalogen- substituted analogues (57-60) of 3-deazaadenosine and 3-halogen-substituted analogues (61 and 62) of 3-deazaguanosine have been synthesized as potential anticancer and/or antiviral agents. Among these compounds, 3-deaza-3-bromoguanosine (62) showed significant cytotoxicity against L1210, P388, CCRF-CEM and B16F10 cell lines in vitro, producing IC50 values of 3, 7, 9 and 7μM, respectively. Several 3-deazaadenosine analogues (38, 51, 57 and 59) showed moderate to weak activity against hepatitis B virus.
- Liu,Luo,Mozdziesz,Lin,Dutschman,Gullen,Cheng,Sartorelli
-
p. 1975 - 2000
(2007/10/03)
-