17-Methoxy-Lat A

(R)-4-((4Z,8E,10Z)-(1R,12S,15R,17R)-17-Methoxy-5,12-dimethyl-3-oxo-2,16-dioxa-bicyclo[13.3.1]nonadeca-4,8,10-trien-17-yl)-2-oxo-thiazolidine-3-carboxylic acid 2-trimethylsilanyl-ethyl ester

(2R,4R,6R)-2-methoxy-6-((S)-3-methylhex-4-yn-1-yl)-2-((R)-2-oxothiazolidin-4-yl)tetrahydro-2H-pyran-4-yl (2Z,6E)-3-methyldeca-2,6-dien-8-ynoate

(2R,4R,6R)-2-methoxy-2-((R)-3-(4-methoxybenzyl)-2-oxothiazolidin-4-yl)-6-((S)-3-methylhex-4-yn-1-yl)tetrahydro-2H-pyran-4-yl (2Z,6E)-3-methyldeca-2,6-dien-8-ynoate