ISSN:
1434-4475
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Derivatives of the following six ring systems were synthesized: 1. 3,10-Dihydro-[1]benzothieno[2,3-d]imidazo[1,5-a]-pyrimidine (I) 2. 6H-[1]Benzothieno[2,3-d]pyrazino[1,2-a]pyrimidine (II) 3. 1,5-Dihydro-[1]benzothieno[2,3-d]imidazo[1,2-a]-pyrimidine (III) 4. 6H-[1]Benzothieno[2,3-d]pyrimido[1,2-a]pyrimidine (IV) 5. 1,5-Dihydro-imidazo[1,2-a]thieno[2,3-d]pyrimidine (V) 6. 4H-Pyrimido[1,2-a]thieno[2,3-d]pyrimidine (VI) The first four types are new heterocyclic systems. 2-Aminomethyl-5,6,7,8-tetrahydro-[1]benzothieno[2,3-d]pyrimidin-4(3H)-one (5), which was used as intermediate for typesI andII, was synthesized by various methods. TypesIII andIV were prepared from 2-methylthio-5,6,7,8-tetrahydro-[1]-benzothieno[2,3-d]pyrimidin-4(3H)-one via the corresponding 2-benzylamino derivatives, followed by ring closure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00911944
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