Number | Date | Country | Kind |
---|---|---|---|
55-27673 | Mar 1980 | JPX | |
55-98956 | Jul 1980 | JPX |
This is a division of application Ser. No. 238,136 filed Feb. 25, 1981 and now U.S. Pat. No. 4,338,255.
Number | Name | Date | Kind |
---|---|---|---|
4316985 | Broadhurst et al. | Feb 1982 |
Entry |
---|
Tetrahedron Letters, No. 24, 2065-2068 (1974). |
Tetrahedron, vol. 32, 939-944 (1976). |
Tetrahedron Letters, No. 29, 2683-2686 (1979). |
Tetrahedron Letters, vol. 21, 1735-1738 (1980). |
J. Am. Chem. Soc., vol. 101, 3129-3131, 5843-5844, (1979). |
Asami et al, Heterocycles, vol. 12, No. 4 (1979) 499-502. |
Shimba et al, Chemistry Letters (1979) 783-784. |
Asami et al, Bull. Chem. Soc. Japan, vol. 51 (1978) 1869-1873. |
Number | Date | Country | |
---|---|---|---|
Parent | 238136 | Feb 1981 |