ES-242 Derivatives and Cycloheptapeptides from Cordyceps sp. Strains BCC 16173 and BCC 16176
摘要:
Five new ES-242 analogues (1-5) were isolated together with nine known compounds (6-14) from the insect pathogenic fungus Cordyceps sp. BCC 16173. A closely related strain, BCC 16176, provided cordyheptapeptide A (15) and small amount of its new analogue, cordyheptapeptide B (16), along with known ES-242s. Structures of the new bioxanthracenes, 1-5, were determined to be 6'-O-desmethyl analogues of 6 (ES-242-4), 8, 9 (ES-242-2), 12, and 13, respectively, primarily by spectroscopic analyses. Cordyheptapeptide B (16) has an N-methyl-L-phenylalanine residue instead of the N-methyl-L-tyrosine in 15.
Nonclassical Size Dependence of Permeation Defines Bounds for Passive Adsorption of Large Drug Molecules
作者:Cameron R. Pye、William M. Hewitt、Joshua Schwochert、Terra D. Haddad、Chad E. Townsend、Lyns Etienne、Yongtong Lao、Chris Limberakis、Akihiro Furukawa、Alan M. Mathiowetz、David A. Price、Spiros Liras、R. Scott Lokey
DOI:10.1021/acs.jmedchem.6b01483
日期:2017.3.9
Macrocyclicpeptides are considered large enough to inhibit “undruggable” targets, but the design of passively cell-permeable molecules in this space remains a challenge due to the poorly understood role of molecular size on passive membranepermeability. Using split-pool combinatorial synthesis, we constructed a library of cyclic, per-N-methlyated peptides spanning a wide range of calculated lipohilicities
大环肽被认为足够大以抑制“非药物”靶标,但由于分子大小对被动膜通透性的作用尚不为人所知,因此在该空间中被动渗透细胞的设计仍然是一个挑战。使用拆分池组合合成,我们构建了一个环状的,每N个甲基化的肽库,该库涵盖了广泛的计算脂蛋白性(0 < A log P<8)和分子量(〜800 Da
ES-242 Derivatives and Cycloheptapeptides from <i>Cordyceps</i> sp. Strains BCC 16173 and BCC 16176
Five new ES-242 analogues (1-5) were isolated together with nine known compounds (6-14) from the insect pathogenic fungus Cordyceps sp. BCC 16173. A closely related strain, BCC 16176, provided cordyheptapeptide A (15) and small amount of its new analogue, cordyheptapeptide B (16), along with known ES-242s. Structures of the new bioxanthracenes, 1-5, were determined to be 6'-O-desmethyl analogues of 6 (ES-242-4), 8, 9 (ES-242-2), 12, and 13, respectively, primarily by spectroscopic analyses. Cordyheptapeptide B (16) has an N-methyl-L-phenylalanine residue instead of the N-methyl-L-tyrosine in 15.