Synthesis and biological evaluation of 2,8-disubstituted 9-benzyladenines: discovery of 8-mercaptoadenines as potent interferon-inducers
作者:Kosaku Hirota、Kazunori Kazaoka、Hironao Sajiki
DOI:10.1016/s0968-0896(03)00234-7
日期:2003.7
Recently, we have identified 9-benzyl-8-hydroxyadenines bearing an appropriate substituent (a butoxy, propylthio or butylamino group) at the 2-position as potent interferon (IFN)-inducers. Herein we report the design, synthesis, and IFN-inducing activity of 8-substituted 9-benzyladenines possessing such an appropriate substituent at the 2-position. Introduction of the appropriate substituent into the 2-position of the adenine nucleus gave rise to expression of the activity even in 9-benzyladenines bearing no hydroxyl group at the 8-position. An amino group at the 6-position and a hydroxyl or thiol group carrying an acidic proton at the 8-position are required to express excellent IFN-inducing activity. 9-Benzyl-2-butoxy-8-mercaptoadenine (9) indicated the most potent activity with MEC of 0.001 muM. (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis and immunostimulatory activity of substituted TLR7 agonists
作者:Babatope Akinbobuyi、Lei Wang、Katherine C. Upchurch、Matthew R. Byrd、Charles A. Chang、Jeremy M. Quintana、Rachel E. Petersen、Zacharie J. Seifert、José R. Boquin、SangKon Oh、Robert R. Kane
DOI:10.1016/j.bmcl.2016.07.049
日期:2016.9
Fifteen new substituted adenines were synthesized as potential TLR7 agonists. These compounds, along with 9 previously reported compounds, were analyzed for TLR7 activity and for the selective stimulation of B cell proliferation. Several functionalized derivatives exhibit significant activity, suggesting their potential for use as vaccine adjuvants.