Discovery of XL888: A novel tropane-derived small molecule inhibitor of HSP90
摘要:
With structural guidance, tropane-derived HTS hits were modified to optimize for HSP90 inhibition and a desirable in vivo profile. Through an iterative SAR development process 12i (XL888) was discovered and shown to reduce HSP90 client protein content in PD studies. Furthermore, efficacy experiments performed in a NCI-N87 mouse xenograft model demonstrated tumor regression in some dosing regimens. (C) 2012 Elsevier Ltd. All rights reserved.
A compound according to Formula I or II:
wherein R1, R1b, R2, L1, and L2 and L2b are as defined in the specification, pharmaceutical compositions thereof, and methods of use thereof.