Claims
- 1. A furochromone of formula VI
- wherein R.sub.14 is:
- (a) hydrogen;
- (b) alkyl of one to 8 carbon atoms, inclusive;
- (c) alkoxymethyl of 2 to 8 carbon atoms, inclusive;
- (d) alkylthioalkyl of 2 to 8 carbon atoms, inclusive;
- (e) trifluoromethyl;
- (f) phenoxymethyl;
- (g) phenylthiomethyl;
- (h) phenoxymethyl or phenylthiomethyl substituted by chloro, fluoro, trifluoromethyl, alkyl of one to 3 carbon atoms or alkoxy of one to 3 carbon atoms; or
- (i) cycloalkyl of 3 to 10 carbon atoms; inclusive;
- wherein one of R.sub.3 and R.sub.4 is methoxy and the other is methoxy or hydrogen; and
- 2. A furochromone according to claim 1, wherein R.sub.14 is hydrogen or
- 3. A furochromone according to claim 2, wherein R.sub.14 is hydrogen or
- 4. 6-Bromo-4,9-dimethoxyfurochromone, a compound according to claim 3,
- 5. 6-Bromo-7-methyl-4,9-dimethoxyfurochromone, a compound according to
- 6. 6-Chloro-7-methyl-4,9-dimethoxyfurochromone, a compound according to
- 7. A furochromone according to claim 1, wherein R.sub.3 and R.sub.4 are
- 8. A furochromone according to claim 1, wherein R.sub.3 is methoxy and
- 9. A furochromone according to claim 1, wherein R.sub.3 is hydrogen and R.sub.4 is methoxy.
DESCRIPTION
This application is a divisional of copending application Ser. No. 116,322, filed Jan. 28, 1980, now U.S. Pat. No. 4,284,569 which is a continuation-in-part of Ser. No. 011,816, filed Feb. 13, 1979, now abandoned.
US Referenced Citations (5)
Non-Patent Literature Citations (6)
Entry |
Abu-Shady et al., J. Pharm. Belg., 33, 397 (1978). |
Schonberg et al., JACS, 11, 5439 (1955). |
Mustafa et al., J. Org. Chem., 26, 886 (1961). |
Musante et al., Pharmaco (Pavie) Ed. Sci. 15, 81 (1960). |
Abu-Shady, U.A.R.J. Pharm. Sci., 11, 283 (1970). |
Fabbrini, Ann. Chim. (Rome), 46, 130 (1956). |
Divisions (1)
|
Number |
Date |
Country |
Parent |
116322 |
Jan 1980 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
11816 |
Feb 1979 |
|