A new megastigmane from Kalanchoe tubiflora (Harvey) Hamet

Exploring the Use of Bryophyllum as Natural Source of Bioactive Compounds with Antioxidant Activity to Prevent Lipid Oxidation of Fish Oil-In-Water Emulsions

“…Previous phytochemical analyses conducted on Bryophyllum spp. allowed to identify a variety of phenolic acids, including gallic, ferulic, and caffeic acids, and flavonol derivatives, such as kaempferol glycosides in BD extracts [ 33 , 34 ], and quercetin and flavone glycosides, gallic acid, and some of its derivatives in BT extracts [ 35 , 36 ]. These results are in line with the preliminary identification experiments performed on Bryophyllum extracts by HPLC-DAD-ESI/MS n , as extracts were constituted by phenolic acids and flavonols, mainly represented by kaempferol, myricetin, and quercetin, and anthocyanins, mostly malvidin derivatives ( Supplementary Table S1 ).…”

Bryophyllum pinnatum and Related Species Used in Anthroposophic Medicine: Constituents, Pharmacological Activities, and Clinical Efficacy

“…To our knowledge, no flavonoids have been reported from B. daigremontianum, but quercetin (27), 4′-O-methylherbacetin (42), and 3,5,7,8,4′-pentahydroxy-3′-methoxyflavone (43) have been isolated from the whole plants of B. delagoense [38] (l " Fig. 2).…”

“…The wax further contains glutanol, glutinol acetate, epifriedelanol, germanicol, and β-amyrin [45]. Finally, β-sitosterol-3-O-glucoside, stigmasterol-3-O-glucoside, a megastigmane sesquiterpene, tubiflorone (48) [38], and two cardenolides, kalantubolides A (49) and B (50) [14], were isolated from B. delagoense. The latter compounds possess a 1,3,5-orthoacetate function that is also found in many bufadienolides of the genus Bryophyllum.…”

“…Phenolic acid derivatives identified in B. pinnatum include gallic acid [36], syringic acid β-D-glucopyranosyl ester, 4′-O-β-D-glucopyranosyl-cis-p-coumaric acid [13], and, according to a previous review, ferulic acid, syringic acid, caffeic acid, p-coumaric acid, protocatechuic acid, 4-hydroxy-3-methoxy-cinnamic acid, and p-hydroxybenzoic acid [2]. 4-OEthylgallic acid, syringic acid, vanillic acid, methyl gallate, 3,4-dimethoxyphenol, phloroglucinol, and 3,4-dihydroxyallylbenzene were reported in B. delagoense [38]. The presence of n-alkanols and n-alkanes, such as n-hentriacontane and n-tritriacontane [39], bryophollenone (52) [41], and a minor constituent, 1-octen [47], have been reported in B. pinnatum.…”

Differential Distribution of Flavonoids and Phenolic Acids in Leaves of Kalanchoe delagoensis Ecklon & Zeyher (Crassulaceae)

“…The species ability to adapt to such conditions is related to its Crassulacean Acid Metabolism (CAM), succulent cylindrical leaves, and chemical protection, which is attributed to the presence of phenolic compounds. The presence of these substances was reported in a study of the chemical composition of an ethanolic plant extract of this species (Huang et al, 2013).…”