학술저널
6-엑소메칠렌 펜남 유도체의 합성
Synthesis of 6-Exomethylene Penams Derivatives
- 대한약학회
- 약학회지
- 제47권 제5호 (2003년)
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2003.10288 - 292 (5 pages)
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The synthesis of new 6-exomethylene penams with substituted triazole ring was described. The 6,6-dibromopenam 5 was reacted with CH3MgBr and substituted triazole 4 to afford the 6-bromo penicillanate 6, which was treated with acetic anhydride to give acetoxy compound 7. The deacetobromination of acetoxy compound 7 with zinc and acetic aicd gave 6-exomethylene penams 8, which was oxidized to sulfones 9 by m-CPBA. The p-methoxybenzyl compounds 6~9 were deprotected by AlCl3 and neutralized to give the sodium salts 10~13.
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