A synthesis of [3-13C]- and [3-14C]-3-amino-2-phenylpropionic acids 7a and 7b is described. The incorporation of this amino acid into tenellin 1 from Beauveria bassiana(Bals.) Vuill. and into tropic acid 10 moiety of the tropane alkaloids hyscoyamine 8 and scopolamine 9 from Datura innoxia was studied but proved unsuccessful in each case.
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Cox et al. (1991) studied this question.
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