Parietina Referencias Enlaces externos Menú de navegación68791CHEMBL426241019310639H6PT94IV611S/C16H12O5/c1-7-3-9-13(11(17)4-7)16(20)14-10(15(9)19)5-8(21-2)6-12(14)18/h3-6,17-18H,1-2H3FFWOKTFYGVYKIR-UHFFFAOYSA-NNúmero CASCaloplaca coralloides chemistry10.1016/j.cropro.2004.05.00510.1016/S0022-2860(02)00384-810.1007/BF00333715sus editores

AntifúngicosAntraquinonasFenol éteres


fórmula químicaKOHfenarimolpolioxina B




























 
Parietina

Parietin.svg
Nombre IUPAC

1,8-dihydroxy-6-methoxy-3-methyl-anthracene-9,10-dione
General
Otros nombres
Physcion(e), rheochrysidin, methoxyemodin
Fórmula estructural
Imagen de la estructura
Fórmula molecular
C16H12O5
Identificadores
Número CAS
521-61-9[1]
ChEBI
68791
ChEMBL
CHEMBL42624
ChemSpider
10193
PubChem
10639
UNII
H6PT94IV61




Propiedades físicas
Apariencia
naranja/amarillo
Masa molar
284.26348 g/mol
Valores en el SI y en condiciones estándar
(25 ℃ y 1 atm), salvo que se indique lo contrario.

La parietina, con fórmula química C16H12O5, es el pigmento cortical predominante de los líquenes del género Caloplaca, un producto secundario del liquen Xanthoria parietina, y un pigmento que se encuentra en las raíces de Rumex crispus. Tiene un color amarillo-naranja y absorbe la luz azul.


Reacciona con KOH para formar un compuesto de color rojizo-magenta profundo.


También ha demostrado actividad anti-hongos contra el moho pulverulento de la cebada y el moho del pepino, de manera más eficiente en este último caso que los tratamientos con fenarimol y polioxina B.



Referencias



  1. Número CAS



  • Caloplaca coralloides chemistry


  • Choi, Gyung Ja; Seon-Woo Lee, Kyoung Soo Jang, Jin-Seog Kim, Kwang Yun Cho and Jin-Cheol Kim (diciembre de 2004). «Effects of chrysophanol, parietin, and nepodin of Rumex crispus on barley and cucumber powdery mildews». Crop Protection 23 (12): 1215-1221. doi:10.1016/j.cropro.2004.05.005.  La referencia utiliza el parámetro obsoleto |coautores= (ayuda)


  • Edwards, Howell G. M.; Emma M. Newton, David D. Wynn-Williams, and Steven R. Coombes (12 de marzo de 2003). «Molecular spectroscopic studies of lichen substances 1: parietin and emodin». Journal of Molecular Structure 648 (1–2): 49-59. doi:10.1016/S0022-2860(02)00384-8.  La referencia utiliza el parámetro obsoleto |coautores= (ayuda)


  • Solhaug, Knut A.; Yngvar Gauslaa (noviembre de 1996). «Parietin, a photoprotective secondary product of the lichen Xanthoria parietina». Oecologia 108 (3): 412-418. doi:10.1007/BF00333715. 


Enlaces externos



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