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The use of microorganisms to induce chemical modifications in organic molecules is a very useful tool in organic synthesis, to obtain biologically active substances. The fungus Cephalosporium aphidicola is known by its ability to hydroxylate several skeleton positions of many classes of organ - ic compounds. In this work, the microbial transformation of ent -kaur-16-en-19-ol ( 1) by C. aphidico - la , afforded two hydroxylated compounds, ent -kauran-16 b, 19-diol ( 2) and ent -kauran-16 b, 17,19-triol (3). Their structures were established by 1D and 2D-NMR studies. Both compounds were tested for their action on the growth of radical and shoot of Lactuca sativa .

eclética química

Di-And Tri-Hydroxylated Kaurane Derivatives From Microbial Transformation Of Ent-Kaur-16-En-19-Ol By Cephalosporium Aphidicola And Their Allelopathic Activity On Lactuca Sativa (Lettuce)