Kottamides A−D:  Novel Bioactive Imidazolone-Containing Alkaloids from the New Zealand Ascidian Pycnoclavella kottae

Kottamides A−D:  Novel Bioactive Imidazolone-Containing Alkaloids from the New Zealand Ascidian <i>Pycnoclavella </i><i>k</i><i>ottae</i> Kottamides A−D:  Novel Bioactive Imidazolone-Containing Alkaloids from the New Zealand Ascidian Pycnoclavella kottae Kottamide E, the first example of a natural product bearing the amino acid 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) Isodiplamine, cystodytin K and lissoclinidine: novel bioactive alkaloids from the New Zealand ascidian Lissoclinum notti Haterumaimides J and K, Potent Cytotoxic Diterpene Alkaloids from the Ascidian Lissoclinum Species Three New Pyridoacridine Type Alkaloids from a Singaporean Ascidian New Imidazole Alkaloids From the Sponge Leucetta sp. and the Associated Predatory Nudibranch Notodoris gardineri Distomadines A and B, novel 6-hydroxyquinoline alkaloids from the New Zealand ascidian, Pseudodistoma aureum Coproverdine, a Novel, Cytotoxic Marine Alkaloid from a New Zealand Ascidian Haterumaimides F−I, Four New Cytotoxic Diterpene Alkaloids from an Ascidian <i>Lissoclinum</i> Species