RobertsonA., SmithiesW. R., and TittensorE., J. Chem. Soc., 1949, 879.
2.
HarrisA., RobertsonA., and WhalleyW. B., J. Chem. Soc., 1958, 1799; G. A. Ellestad, B. Green, A. Harris, W. B. Whalley and H. Smith, J. Chem. Soc., 1965, 7246.
3.
KimY.K., SonK. H., NamJ. Y., KimS. U., JeongT. S., LeeW. S., BokS. H., KwonB. M., ParkY. J., and ShinJ. M., J. Antibiotics, 1996, 49, 815.
4.
AllisonA.J., ConnollyJ. D., and OvertonK. H., J. Chem. Soc., (C), 1968, 2122; C. Holzapfel and P.S. Steyn, Tetrahedron, 1968, 24, 3321.
5.
DockerillB., HansonJ. R., and SivernsM., Phytochemistry, 1978, 17, 572.
6.
ScottA.I., YoungD. W., HutchinsonS. A., and BhaccaN. S., Tetrahedron Lett., 1964, 849.
