千层纸素A

Oroxylin A
	IUPAC名; 5,7-Dihydroxy-6-methoxyflavone
别名	Baicalein 6-methyl ether
识别
CAS号	480-11-5
PubChem	5320315
ChemSpider	4478428
SMILES	COC1=C(C=C2C(=C1O)C(=O)C=C(O2)C3=CC=CC=C3)O;
InChI	InChI=1S/C16H12O5/c1-20-16-11(18)8-13-14(15(16)19)10(17)7-12(21-13)9-5- 3-2-4-6-9/h2-8,18-19H,1H3;
InChIKey	LKOJGSWUMISDOF-UHFFFAOYSA-N
ChEBI	61668
性质
化学式	C16H12O5
摩尔质量	284.26 g/mol g·mol⁻¹
	若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

千层纸素A（英语：Oroxylin A，也称为5,7-二羟基-6-甲氧基黄酮，5,7-Dihydroxy-6-methoxyflavone）是一种天然的O-甲基化黄酮类化合物，存在于黄芩（学名：Scutellaria baicalensis）^[1]、美黄芩（学名：Scutellaria lateriflora）^[2]^[3]、木蝴蝶（学名：Oroxylum indicum）^[4]等植物中。

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参考文献

[1] [1]
Li, Hua-Bin; Chen, Feng. Isolation and purification of baicalein, wogonin and oroxylin A from the medicinal plant Scutellaria baicalensis by high-speed counter-current chromatography. Journal of Chromatography A. 2005-05, 1074 (1-2): 107–110. doi:10.1016/j.chroma.2005.03.088.

[2] [2]
Li J, Ding Y, Li XC, Ferreira D, Khan S, Smillie T, Khan IA. Scuteflorins A and B, dihydropyranocoumarins from Scutellaria lateriflora. J. Nat. Prod. 2009, 72 (6): 983–7. PMID 19555121. doi:10.1021/np900068t.

[3] [3]
Nishikawa K, et al. Phenolics in tissue cultures of Scutellaria (PDF). Natural Medicines. 1999, 53 (4): 209–13.

[4] [4]
The constitution of oroxylin-A, a yellow colouring matter from the root-bark of Oroxylum indicum, vent R. C. Shah, C. R. Mehta and T. S. Wheeler

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