Lanceolatin A hexamethyl ether

Lanceolatin A hexamethyl ether

Common Name: Lanceolatin A hexamethyl ether

Synonyms: 4H-​1-​Benzopyran-​4-​one, 3-​[5-​(5,​7-​dimethoxy-​4-​oxo-​4H-​1-​benzopyran-​2-​yl)​-​2-​methoxyphenyl]​-​2,​3-​dihydro-​5,​7-​dimethoxy-​2-​(4-​methoxyphenyl)​-​, (2R-​trans)​- (9CI)

CAS Registry Number: 158963-85-0

InChI:

InChIKey:

Formula: C36H32O10

Molecular Weight: 624.642

Exact Mass: 624.1996

NMR Solvent: acetone-d6

MHz: 300 (1H)

Calibration: TMS

NMR references: Pegnyemb, D., Ghogomu-Tih, R., Sondengam, B., Martin, M., Bodo, B. (1994). Minor Biflavonoids of Lophira lanceolata. J. Nat. Prod. 57, 1275-1278.

Species: synthesis - Pegnyemb, D., Ghogomu-Tih, R., Sondengam, B., Martin, M., Bodo, B. (1994). Minor Biflavonoids of Lophira lanceolata. J. Nat. Prod. 57, 1275-1278.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.57 s
6 6.78 d 2.4
8 6.48 d 2.4
2' 7.7 d 2.4
5' 7 d 8.7
6' 7.81 dd 8.7, 2.4
2" 5.91 d 12.4
3" 4.61 d 12.4
6" 6.24 d 2.2
8" 6.24 d 2.2
2''', 6''' 7.31 m
3''', 5''' 6.8 m
OCH3 3.88 s
OCH3 3.81 s
OCH3 3.81 s
OCH3 3.77 s
OCH3 3.75 s
OCH3 3.65 s