This is an Open Access-journals’ PDF published in Horstmann, N., Essig, S., Bockelmann, S., Wieczorek, H., Huss, M., Sasse, F., Menche, D. Archazolid A-15-O-β-D-glucopyranoside and iso- archazolid B: Potent V-ATPase inhibitory polyketides from the Myxobacteria cystobacter violaceus and Archangium gephyra (2011) Journal of Natural Products, 74 (5), pp. 1100- 1105.