Total synthesis of pteridic acid A.
A convergent approach to the total synthesis of pteridic acid A, having potent plant growth regulator activity, is described. Key steps include the desymmetrization of bicyclic olefin with Brown's chiral hydroboration, acid-mediated spiroketalization, and zirconium-catalyzed ethylmagnesation protocol to install the ethyl stereocenter at C14.
PubMed Abstracts
PubMed Abstracts