Journal
CHEMISTRY & BIODIVERSITY
Volume 16, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbdv.201900349
Keywords
N-methyltetrahydroellipticine; antifouling; kokusaginine; flindersiamine; indole alkaloids; biological activity
Funding
- CONICET [PIP 2014-2016, 11220130100523CO]
- UBA (UBACyT) [20020130100457BA]
- ANPCyT [PICT 2014-2063]
- CICPBA
- CONICET for doctoral fellowships
- UNLP
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In this work, the antifouling activity of five alkaloids, isolated from trees of the Atlantic rainforest, was studied. The tested alkaloids were olivacine (1), uleine (2) and N-methyltetrahydroellipticine (3) from Aspidosperma australe ('yellow guatambu') and the furoquinoline alkaloids kokusaginine (4) and flindersiamine (5) from Balfourodendron riedelianum ('white guatambu'). All these compounds can be isolated from their natural sources in high yields in a sustainable way. The five compounds were subjected to laboratory tests (attachment test of the mussel Mytilus edulis platensis) and field trials, by incorporation into soluble matrix paints, and 45 days of exposure of the painted panels in the sea. The results show that compound 3 is a very potent antifoulant, and that compounds 4 and 5 are also very active, while compounds 1 and 2 did not show any significant antifouling activity. These results open the way for the development of environmentally friendly antifouling agents, based on abundant and easy-to-purify compounds that can be obtained in a sustainable way.
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