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【结 构 式】

【药物名称】Frederine

【化学名称】2-(3,4-Dihydroxyphenyl)-3-(D-glucopyranosyloxy)-4H-1-benzopyran-4-one

【CA登记号】307521-67-1, 199469-77-7 ((S)-isomer)

【 分 子 式 】C21H20O10

【 分 子 量 】432.38755

【开发单位】Universiteit Maastricht (Originator), Vrije Universiteit (Originator)

【药理作用】Chemoprotective Agents, ONCOLYTIC DRUGS, Antioxidants

合成路线1

Claisen condensation between 2'-hydroxyacetophenone (I) and 3,4-dibenzyloxybenzaldehyde (II) afforded chalcone (III) which was further subjected to the Agar-Flynn-Oyamada reaction to give flavonol (IV). The silver oxide-assisted glycosylation of (IV) with acetobromoglucose (V) in pyridine furnished the protected glucoside (VI). Removal of the acetyl protecting groups of (VI) was effected by methanolysis in the presence of potassium tert-butoxide to yield (VII). Subsequent catalytic hydrogenolysis of the benzyl groups of (VII) provided the title compound.

1 Frederique, A.; et al.; Synthesis of novel 3,7-substituted-2-(3',4'-dihydroxyphenyl) flavones with improved antioxidant activity. J Med Chem 2000, 43, 20, 3752.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 29654 2-hydroxyacetophenone; 1-(2-hydroxyphenyl)-1-ethanone 118-93-4 C8H8O2 详情 详情
(II) 49829 3,4-Dibenzyloxybenzaldehyde; 3,4-Bis(benzyloxy)benzaldehyde 5447-02-9 C21H18O3 详情 详情
(III) 49830 (E)-3-[3,4-bis(benzyloxy)phenyl]-1-(2-hydroxyphenyl)-2-propen-1-one C29H24O4 详情 详情
(IV) 49831 2-[3,4-bis(benzyloxy)phenyl]-3-hydroxy-4H-chromen-4-one C29H22O5 详情 详情
(V) 27260 (2R,3R,4S,5S,6R)-4,5-bis(acetoxy)-6-[(acetoxy)methyl]-2-bromotetrahydro-2H-pyran-3-yl acetate 572-09-8 C14H19BrO9 详情 详情
(VI) 49832 (2R,3R,4S,5R)-3,5-bis(acetoxy)-2-[(acetoxy)methyl]-6-([2-[3,4-bis(benzyloxy)phenyl]-4-oxo-4H-chromen-3-yl]oxy)tetrahydro-2H-pyran-4-yl acetate C43H40O14 详情 详情
Extended Information