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- W2315690780 abstract "Several clavulone derivatives were synthesized from clavulone I (1) and clavulone II (2). The carboxylic acid 3 and 4-O-deacetyl derivative 4 were synthesized by selective enzymatic hydrolysis of 2 using porcine liver esterase and orange peel acetylesterase, respectively. From the carboxylic acid 3, the benzyl ester 5, tert-butyl ester 6 and amide 7 were prepared. The 12-O-deacetyl derivative 9 was synthesized by organicuprate reduction of the epoxide 8 which was prepared from 2. The derivatives 13-15, which possess an elongated α-side chain, were synthesized from 1 via the hemiacetal 12." @default.
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- W2315690780 date "1990-01-01" @default.
- W2315690780 modified "2023-10-14" @default.
- W2315690780 title "Synthesis of clavulone derivatives. Selective cleavage of ester bonds and elongation of .ALPHA.-side chain in clavulone." @default.
- W2315690780 doi "https://doi.org/10.1248/cpb.38.65" @default.
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