Tetrahedron p. 3015 - 3020 (1987)
Update date:2022-07-29
Topics:
Rao, K. S. R. Mohan
Iyer, C. S. Rukmani
Iyer, P. R.
Reaction of phenacylchroman 1 with ethoxyalyl chloride in pyridine followed by hydrolysis of the resulting esters 2 and 3 and decarboxylation of the acids 4 and 5, gave dihydro-4'-O-methyl alpinum isoflavone 6 and 4'-O-methylderrone 7 respectively.Similarly 8 gave 11 which was selectively demethylated to 7.DDQ, dehydrogenation of 6, 7 and 11 gave 14, 15 and 17.Demethylation of 6 and 7 followed by dehydrogenation gave alpinum isoflavone 18 and derrone 19.
View MoreShanghai Yuantai Chemical Products Co., Ltd
Contact:021--66129803
Address:Chengyin Road,Shanghai,China
Contact:86-512-87182055
Address:No.128 Fangzhou Rd, Suzhou Industrial Park, China, 215125, China
website:http://www.chinabarton.com
Contact:+86-573-82719618
Address:No. 162 Fumin Road, Honghe Town,
website:http://www.hope-chem.com
Contact:86-21-58090396-805
Address:Floor 4, Building 5, No.588 Tianxiong Road, Zhoupu International Medical Zone, ShangHai, China
Shandong Yaroma Perfumery Co., Ltd.
Contact:+86- 531- 88024598
Address:7-702 Caizhi Central, 59 Gong Ye South Road, Jinan City,250101, P. R. China
Doi:10.1021/jo00303a040
(1990)Doi:10.1016/0031-9422(90)80038-I
(1990)Doi:10.1002/anie.202010280
(2021)Doi:10.1016/j.dyepig.2016.09.036
(2017)Doi:10.1021/jo9719463
(1998)Doi:10.1002/adsc.201100835
(2012)
