2-Guanidinoethanesulfonyl sesquiterpenes from the marine sponge Agelas nakamurai

Marine natural products

“…The use of computational-aided structure elucidation facilitated the assignment of agelasidine G–I 1063 – 1065 from a specimen of Agelas nakamurai , 390 which was also the source of related sulfone cyclohexagelasidine A 1066 reported in a separate study. 404 A series of monomeric and dimeric bisabolene-class sesquiterpenoids, bubaridin A–F 1067 – 1073 and several theonellin congeners 1074 – 1076 , were obtained from a Futuna Island sponge of order Bubarida. 405 Other sesquiterpenoids were reported from Acanthella ( 1077 – 1081 ) and Myrmekioderma ( 1082 – 1084 ) sponges, respectively.…”

Synthesis, biological activity, and binding modes of novel guanidino-containing neonicotinoid derivatives

“…Guanidinium compounds are highly effective organic bases with significant biological activity. 8,9 Guanidine compounds can interact with proteins and other molecular targets through H-bonding, charge pairing, and cation–π interactions which are fundamental features of molecular recognition. 10 Additionally, the introduction of guanidino groups into drugs can yield new compounds with insecticidal, bactericidal and fungicidal activity.…”