G. Audran et K. Mori, PLANT BIOREGULATORS, 1 - SYNTHESIS OF PHYLLANTHURINOLACTONE, THE LEAF-CLOSING FACTOR OF PHYLLANTHUS-URINARIA L., AND ITS 3 STEREOISOMERS, EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, (1), 1998, pp. 57-62
Phyllanthurinolactone (1) and its three stereoisomers 18-20 were synth
esized, and only 1 was bioactive as the leaf-closing factor of a nycti
nastic plant, Phyllanthus urinaria L. X-ray analysis of the tetraacety
lglucoside 17 was executed, and the absolute configuration of 1 was de
termined as 6S,7aR.