MSI_000006660
Reliable
排名分数: 5.97
参考来源: Rattus norvegicus (UBERON:0004358: caput epididymis)
M/z: 488.0485
Mass Window: 488.0484 ~ 488.0486 (0.5 ppm)
参考注释
Valoneic acid dilactone_[M+NH4]+ (BioDeep_00000226697)3,4,5-trihydroxy-2-({7,13,14-trihydroxy-3,10-dioxo-2,9-dioxatetracyclo[6.6.2.0⁴,¹⁶.0¹¹,¹⁵]hexadeca-1(14),4,6,8(16),11(15),12-hexaen-6-yl}oxy)benzoic acid
Formula: C21H10O13 (470.012141)
SMILES:
OC(=O)C1=C(OC2=C(O)C3=C4C(=C2)C(=O)OC2=C(O)C(O)=CC(C(=O)O3)=C42)C(O)=C(O)C(O)=C1
Valoneic acid dilactone is a member of the class of compounds known as hydrolyzable tannins. Hydrolyzable tannins are tannins with a structure characterized by either of the following models. In model 1, the structure contains galloyl units (in some cases, shikimic acid units) are linked to diverse polyol carbohydrate-, catechin-, or triterpenoid units. In model 2, contains at least two galloyl units C-C coupled to each other, and do not contain a glycosidically linked catechin unit. Valoneic acid dilactone is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Valoneic acid dilactone can be found in cloves, common walnut, and japanese walnut, which makes valoneic acid dilactone a potential biomarker for the consumption of these food products. Valoneic acid dilactone is a hydrolysable tannin that can be isolated from the heartwood of Shorea laeviforia and in oaks species like the North American white oak (Quercus alba) and European red oak (Quercus robur) .
