S. Aphaijitt et al., ISOLATION AND CRYSTAL-STRUCTURE OF LIMONIDILACTONE - A LABDANE DITERPENE FROM VITEX LIMONIFOLIA, Australian Journal of Chemistry, 48(1), 1995, pp. 133-137
The structure of a new labdane diterpene, limonidilactone, from the le
aves of Vitex limonifolia Wall. (Verbenaceae) has been established by
spectroscopic methods and a single-crystal X-ray structure determinati
on. Crystals are orthorhombic, P2(1)2(1)2(1), a 19.373(10), b 10.871(7
), c 8.207(3) Angstrom, Z 4. Diffractometer data were refined by full-
matrix least-squares techniques to a residual of 0.043 for 1436 indepe
ndent 'observed' reflections.