Studies of thieno[2,3-b]pyrazines in preparation of pyrazino[2′,3′:4,5]thieno[3,2-d]pyrimidines and related molecules |
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Authors: | S. W. Schneller F. W. Clough |
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Abstract: | A variety of 2,3-disubstituted derivatives of the previously unknown thieno[2,3-b]pyrazine ring system have been employed as a synthetic foundation for pyrazino[2′,3′:4,5]thieno[3,2-d]-pyrimidine and several of its derivatives. |
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