74351-53-4Relevant academic research and scientific papers
Quinones and Related Compounds in Higher Plants. IX. Absolute Structures of Catalponol and Its Congeners
Inoue, Kenichiro,Inouye, Hiroyuki,Taga, Tooru,Fujita, Ryoji,Osaki, Kenji,et al.
, p. 1224 - 1229 (2007/10/02)
The absolute structure of (1a) of catalponol, a naphthoquinone congener of Catalpa ovata (Bignoniaceae), was revised to 1 on the basis of chemical correlation with isocatalponol (2), a substance of the same group occuring in Lippia origanoides (Verbenaceae).The validity of the absolute structure of 1 thus deduced, and hence those of isocatalponol (2) and catalponone (6), was verified by single crystal X-ray analysis of the p-bromobenzoate of 2-epicatalponol (9) derived from 1.Keywords-catalponol; isocatalponol; naphthoquinone congeners; absolute structure; X-ray analysis; CD spectra; Catalpa ovata; Bignoniaceae; Lippia origanoides; Verbenaceae.
