共 21 条
- [2] COLONGE J, 1958, B SOC CHIM FR, P326
- [3] DANN O, 1954, LIEBIGS ANN CHEM, V27, P587
- [4] DEAN FM, 1963, NATURALLY OCCURING O
- [5] FONTAINE G, 1968, ANN CHIM FRANCE, V3, P179
- [7] Pyrylium salts with two fused benzopyran nuclei [J]. JOURNAL OF THE CHEMICAL SOCIETY, 1934, : 1533 - 1535
- [8] LANGLEY WD, 1922, J AM CHEM SOC, V44, P2224
- [9] LOUDON JD, 1954, J CHEM SOC, P4301
- [10] Martin E. L., 1942, ORG REACT, V1, P155