The synthesis and properties of new potentially chemotheraputic [sic] pteridine derivatives
A new general synthetic method for the preparation of 6-thiopteridines has been developed. The method involves the addition of thiols to intermediate pyrimidine nitrones formed in situ by the reaction of 4-amino-5-nitrosopyrimidines with pyridinium-activated acetonitriles, acetates, acetophenones, a...
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| Format: | Others |
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BYU ScholarsArchive
1970
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| Online Access: | https://scholarsarchive.byu.edu/etd/8327 https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9327&context=etd |
| Summary: | A new general synthetic method for the preparation of 6-thiopteridines has been developed. The method involves the addition of thiols to intermediate pyrimidine nitrones formed in situ by the reaction of 4-amino-5-nitrosopyrimidines with pyridinium-activated acetonitriles, acetates, acetophenones, and other methylketones. Ca. forty new pteridines were prepared by this method. The preparation of six new 6-pteridinyl ketones, two new 6- pteridinyl ketone thiosemicarbazones, and two new 6-sulfonylpteridines and their 4-acetamido derivatives is also reported. 4-Acetamido-2- amino-7-phenylpteridine 5-oxide was prepared by the reaction of 2- amino-4,6-diacetamido-5-nitrosopyrimidine with either phenylsulfonyl-acetophenone or phenacylpyridinium bromide. Evidence relating to the structure of the acylated 4-amino-5- nitrosopyrimidines used as intermediates in the aforementioned reactions is presented and discussed. Also included in the dissertation are detailed reviews of the following subjects: Pteridine antimalarials, 6-thiopteridines, 6- pteridinesulfonic acids, 6-pteridinesulfonamides, 6-pteridinyl ketones, and pteridine N-oxides. |
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