抄録
The stereochemistry of 1-methyl hydrogen 3-phenyl-2, 2'-iminodipropionate (BSF-A, 1) was determined to be 2S, 2'S by comparing the spectral data of 1 with those of synthetic derivatives. The effects of BSF-A (1) and its analogs on the growth rate of lettuce seedlings were examined. Both diastereomers, 3a (2S, 2'S)and 3b (2S, 2'R), of dimethyl 3-phenyl-2, 2'-iminodipropionate and a regioisomer, 1'-methyl hydrogen 3-phenyl-2, 2'-iminodipropionate (2), exhibited biological activity similar to that of natural product BSF-A (1).
