作者:Xin Wang、David Mealer、Lacey Rodgers、Karin Sandoval、Ken Witt、Carsten Stidsen、Michael Ankersen、A. Michael Crider
DOI:10.2174/157018012801319445
日期:2012.6.1
A series of 2-thiohydantoins were prepared as somatostatin subtype 4 (sst4) ligands. Reaction of a Nsubstituted-
L-tryptophan methyl ester with an isothiocyanate in the presence of triethylamine readily afforded the target
compounds. The 2-thiohydantoins were evaluated for binding affinities in cell lines expressing somatostatin receptor
subtypes 2A (sst2A) and 4 (sst4). Compared to the thiourea NNC-26-9100 (3), all 2-thiohydantoins demonstrated lower
binding affinities at sst4. Incorporation of the thiourea moiety into the more rigid 2-thiohydantoin nucleus leads to a loss
of conformational freedom and may prevent optimal interaction with sst4.
研究人员制备了一系列 2-硫代海因作为体生长抑素亚型 4(sst4)配体。在三乙胺存在下,N-取代-L-色氨酸甲酯与异硫氰酸盐反应,很容易得到目标化合物。在表达体生长抑素受体亚型 2A (sst2A) 和 4 (sst4) 的细胞系中,对 2-thiohydantoins 的结合亲和力进行了评估。与硫脲 NNC-26-9100 (3)相比,所有 2-thiohydantoins 与 sst4 的结合亲和力都较低。将硫脲分子掺入硬度更高的 2-thiohydantoin 核中会导致构象自由度的丧失,从而妨碍与 sst4 的最佳相互作用。