1995年3月
PTERIDINES .105. SELECTIVE N(3)-AND O(4)-ALKYLATION OF L-BIOPTERIN - A CONVENIENT SYNTHESIS OF 3-METHYL-L-BIOPTERIN AND O(4)-METHYL-L-BIOPTERIN AND THE VERSATILE N(2)-(N,N-DIMETHYLAMINOMETHYLENE)-N(3)-P-NITROPHENETHYL-PROTECTED L-BIOPTERIN
PTERIDINES
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- 巻
- 6
- 号
- 1
- 開始ページ
- 1
- 終了ページ
- 7
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- 出版者・発行元
- INT SOC PTERIDINOLOGY
Treatment of L-biopterin (1) with N,N-dimethyformamide dimethyl- (or diethyl)acetal and then with acetic anhydride in pyridine gave 1',2'-di-O-acetyl-N2-(N,N-dimethylaminomethylene)-L-biopterin (4), which was converted by the Mitsunobu reaction into 3-methyl (5) and 3-p-nitrophenetyl derivatives (7). The protective groups on the side chain diols and N2 of these compounds were selectively cleaved to furnish products 6, 8-10, among which 9 is naturally occurring 3-methyl-L-biopterin and 8 is N2,N(3)-protected biopterin, a versatile intermediate for various reactions on the side-chain diol. In contrast, the same Mitsunobu reactions of tri-N2:1',2'-O-acetyl-L-biopterin (11) afforded O4-methyl (12) and O4-NPE derivatives (13), both of which yielded O4-methyl-L-biopterin (14) and subsequently led to 4-amino-L-biopterin (18).
- リンク情報
- ID情報
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- ISSN : 0933-4807
- Web of Science ID : WOS:A1995QX40500001