Number | Date | Country | Kind |
---|---|---|---|
92315 | Nov 1989 | ILX |
Number | Name | Date | Kind |
---|---|---|---|
1935721 | Kunz et al. | Nov 1933 | |
2707704 | Brockmann et al. | May 1955 |
Number | Date | Country |
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0432496 | Jun 1991 | EPX |
Entry |
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"Synthese des Proto-hypericins und Hypericins aus Emodin-antron-(9)," Brockmann, H., et al., Chemische Berichte, vol. 91, No. 3, Mar. 1958, pp. 547-553. |
"Reactions concerned in tertiary amine N-oxides, XV. Dimerization reactions of anthrone and its derivatives using pyridine N-oxide as oxidizing reagent," Haginiwa, J. et al., Chemical Abstracts, No. 87785a, Columbus, OH, U.S., vol. 99, No. 11, Sep. 12, 1983, p. 532. |