Triterpenes and new saponins from Ilex chamaedryfolia: chemotaxonomic tool to ilex species differentiation

Abstract

Recebido em 16/2/10; aceito em 13/9/10; publicado na web em 8/12/10 Three saponins were isolated from leaves of Ilex chamaedryfolia.

MALDI‐ and LDI‐MS saponin fingerprint of leaves and stick components of commercial yerba mate (Ilex paraguariensis)

“…Going on with the data shown in Table , the observed peak at m / z 920 matches, as [M + Na] + species, with the molecular weight previously assigned to two matesaponin isomers . About the peaks at m / z 952 and 1114, it is interesting to note that the former matches with the molecular weight, as [M + Na] + species, of the saponin named ilexoside II described in I. paraguariensis fruits and in leaves of other ilex ( Ilex chamaedryfolia ) . The former matches as [M + Na] + with the molecular weight of the saponin [(Glcp) 3 Arap(HO)Agly] isolated from I. chamaedryfolia by Lencina et al Both saponins were described as glycosides of the named pomolic acid the 19α‐derivative of ursolic acid [(HO)Agly] (Table ) .…”

“…About the peaks at m / z 952 and 1114, it is interesting to note that the former matches with the molecular weight, as [M + Na] + species, of the saponin named ilexoside II described in I. paraguariensis fruits and in leaves of other ilex ( Ilex chamaedryfolia ) . The former matches as [M + Na] + with the molecular weight of the saponin [(Glcp) 3 Arap(HO)Agly] isolated from I. chamaedryfolia by Lencina et al Both saponins were described as glycosides of the named pomolic acid the 19α‐derivative of ursolic acid [(HO)Agly] (Table ) . According to literature, I. chamaedryfolia is one of the species eventually reported as an adulterant of the I. paraguariensis .…”

“…The former matches as [M + Na] + with the molecular weight of the saponin [(Glcp) 3 Arap(HO)Agly] isolated from I. chamaedryfolia by Lencina et al Both saponins were described as glycosides of the named pomolic acid the 19α‐derivative of ursolic acid [(HO)Agly] (Table ) . According to literature, I. chamaedryfolia is one of the species eventually reported as an adulterant of the I. paraguariensis . As is shown in Table , the peak at m / z 952 was always detected (leaves and sticks).…”

“…11 About the peaks at m/z 952 and 1114, it is interesting to note that the former matches with the molecular weight, as [M + Na] + species, of the saponin named ilexoside II described in I. paraguariensis fruits and in leaves of other ilex (Ilex chamaedryfolia). 32,33 The (Table 1). 25,32,33 According to literature, I.…”

“…chamaedryfolia is one of the species eventually reported as an adulterant of the I. paraguariensis. 33 As is shown in Table 1, the peak at m/z 952 was always detected (leaves and sticks). The peak at m/z 1114 was observed as a signal of high intensity in sticks and as a signal of variable intensity in leaves.…”