Tetrahydrohinokiflavone pentaacetate

Tetrahydrohinokiflavone pentaacetate

Common Name: Tetrahydrohinokiflavone pentaacetate

Synonyms: 4H-​1-​Benzopyran-​4-​one, 5,​7-​bis(acetyloxy)​-​2-​[4-​(acetyloxy)​phenyl]​-​6-​[4-​[(2S)​-​5,​7-​bis(acetyloxy)​-​3,​4-​dihydro-​4-​oxo-​2H-​1-​benzopyran-​2-​yl]​phenoxy]​-​2,​3-​dihydro-​, (2S)​-

CAS Registry Number: 202325-63-1

InChI:

InChIKey:

Formula: C40H32O15

Molecular Weight: 752.681

Exact Mass: 752.1741

NMR Solvent: CDCl3

MHz: 300.13 (1H), 75.43 (13C)

Calibration: TMS

NMR references: Rani, M., Rao, C., Gunasekar, D., Blond, A., Bodo, B. (1998). A Biflavonoid from Cycas beddomei. Phytochemistry 47, 319-321.

Species: synthesis - Rani, M., Rao, C., Gunasekar, D., Blond, A., Bodo, B. (1998). A Biflavonoid from Cycas beddomei. Phytochemistry 47, 319-321.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2, 2" 5.45 dd 13, 2.8
3 trans 3.01 dd 17.1, 13
3 cis 2.72 dd 17.1, 2.8
5-OAc 2.3 s
6 6.5 d 2.2
7-OAc 2.16 s
8 6.75 d 2.2
2', 6' 7.44 d 9
3', 5' 7.08 d 9
3" trans 3.08 dd 17.1, 13
3" cis 2.81 dd 17.1, 2.8
5"-OAc 2.36 s
7"-OAc 2.26 s
8" 6.85 s
2''', 6''' 7.17 d 9
3''', 5''' 7.01 d 9
4'''-OAc 2.12 s