Introduction:Basic information about CAS 3385-34-0|5-Carbethoxy-4,6-dimethyl-2-pyrone, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
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A convenient preparation of the side-chain lactone ring of a withanolide precursor.
Steroids 54(3) , 313-20, (1989)
Condensation of C22 and C21 steroidal aldehydes with ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate 1 in alkaline medium, followed by decarboxylation, provides a simple route to the alpha, beta-unsat...