Isolation of a Nitrile-Containing Indole Alkaloid from the Terrestrial Blue-Green Alga Hapalosiphon delicatulus

Isolation of a Nitrile-Containing Indole Alkaloid from the Terrestrial Blue-Green Alga <i>Hapalosiphon</i> <i>delicatulus</i> Isolation of a Nitrile-Containing Indole Alkaloid from the Terrestrial Blue-Green Alga Hapalosiphon delicatulus Ambiguine isonitriles, fungicidal hapalindole-type alkaloids from three genera of blue-green algae belonging to the Stigonemataceae Hapalonamides and other oxidized hapalindoles from Hapalosiphon fontinalis New Hapalindoles from the Cyanophyte Hapalosiphon laingii Hapalindoles: new alkaloids from the blue-green alga Hapalosiphon fontinalis Fontonamide and anhydrohapaloxindole A, two new alkaloids from the blue-green alga Hapalosiphon fontinalis Hapalindoles, antibacterial and antimycotic alkaloids from the cyanophyte Hapalosiphon fontinalis Hapalindoles, antibacterial and antimycotic alkaloids from the cyanophyte Hapalosiphon fontinalis Welwitindolinones, Unusual Alkaloids from the Blue-Green Algae Hapalosiphon welwitschii and Westiella intricata. Relationship to Fischerindoles and Hapalinodoles