Examinando por Autor "Altamirano H.C."
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Ítem Oxidative degradations of the side chain of unsaturated Ent-labdanes. Part II(MDPI, 2007-12) Catalán, L.E.; Marín, K.C.; Altamirano H.C.; Fritis, M.C.; Chamy M.C.A route for the degradation of the side chain of ent-labdane derivatives has been devised, giving the useful synthon 2β,12-dihydroxy-13,14,15,16,17- pentanor-ent-labdane-8-one (8). The use of this compound in the preparation of terpenylquinone derivatives shall be reported elsewhere. In addition we have synthesized the compound 2β,12-diacetoxy-8β,17-epoxy-13,14,15,16- tetranor-ent-labdane (10), which upon catalytic epoxide ring opening in alkaline or acid media gave rise in all cases to the formation of tricyclic compounds. © 2007 by MDPI.