Semantic Scholar uses AI to extract papers important to this topic.
Flowers with poricidally dehiscent anthers are typically nectarless but are avidly visited and often solely pollinated by bees… Expand From the MeOH and ethyl acetate extracts of aerial parts of Penstemon gentianoides HBK (Plantaginaceae) an unusual iridoid of the… Expand Speciation involves the formation of reproductive isolating mechanisms such as a difference in pollinators, incompatibility… Expand In a continuation of our search for potential tumor inhibitors from plants, it was found that the CH2Cl2-MeOH (1:1) extracts from… Expand Two new trans-fused iridoid glycosides (5 alpha H)-6 alpha-8-epidihydrocornin and (5 alpha H)-6 alpha-8-hydroxy-8-epiloganin… Expand Isolation and characterization of the new iridoid 10-hydroxy-(5 alpha H)-6-epidihydrocornin from Penstemon secundiflorus… Expand The new phenylethanoid glycosides 2-O-acetyl-3'''-O-methylverbascoside and 2,4"-di-O-acetyl-3'''-O-methylverbascoside were… Expand From leaves of PENSTEMON WHIPPLEANUS A. Gray three iridoid glucosides and an acetophenone glucoside have been isolated which were… Expand From leaves of PENSTEMON SERRULATUS Menz. two new iridoid glycosides have been isolated. Both glycosides have the same aglycon… Expand From leaves of Penstemon serrulatus Menz. a new esteriridoid has been isolated. The structure was established by spectroscopic… Expand