Conclusions
A new scheme of synthesis was devised for 3-ethyl-4-p-methoxypheny1-2-methy1-3-cyclohexene-1-carboxylic acid — an analog of dehydrodoisynolic acid with a deeyclized ring B —in which the key stage is the diene condensation of 3-ethyl-2-p-methoxyphenyl-1,3-pentadiene with acrylic acid.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 624–628, March, 1967.
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Akhrem, A.A., Titov, Y.A. & Levina, I.S. Steroid analogs without the B ring. Russ Chem Bull 16, 601–604 (1967). https://doi.org/10.1007/BF00906001
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DOI: https://doi.org/10.1007/BF00906001