Exquisite Selectivity for Human Toll-Like Receptor 8 in Substituted Furo[2,3-c]quinolines
摘要:
Toll-like receptor (TLR)-8 agonists activate adaptive immune responses by inducing robust production of T helper 1-polarizing cytokines, suggesting that TLR8-active compounds may be promising candidate adjuvants. We synthesized and evaluated hitherto unexplored furo[2,3-d]quinolines and regioisomeric furo[3,2-c]quinolines derived via a tandem, one-pot Sonogashira coupling and intramolecular 5-endo-dig cyclization strategy in a panel of primary screens. We observed a pure TLR8-agonistic activity profile in select furo[2,3-c]quinolines, with maximal potency conferred by a C2-butyl group (EC50 = 1.6 mu M); shorter, longer, or substituted homologues as well as compounds bearing C1 substitutions were inactive, which was rationalized by docking studies using the recently described crystal structure of human TLR8. The best-in-class compound displayed,prominent proinflammatory cytokine induction (including interleukin-12 and interleukin-18), but was bereft of interferon-alpha inducing properties, confirming its high selectivity for human TLR8.
Exquisite Selectivity for Human Toll-Like Receptor 8 in Substituted Furo[2,3-c]quinolines
摘要:
Toll-like receptor (TLR)-8 agonists activate adaptive immune responses by inducing robust production of T helper 1-polarizing cytokines, suggesting that TLR8-active compounds may be promising candidate adjuvants. We synthesized and evaluated hitherto unexplored furo[2,3-d]quinolines and regioisomeric furo[3,2-c]quinolines derived via a tandem, one-pot Sonogashira coupling and intramolecular 5-endo-dig cyclization strategy in a panel of primary screens. We observed a pure TLR8-agonistic activity profile in select furo[2,3-c]quinolines, with maximal potency conferred by a C2-butyl group (EC50 = 1.6 mu M); shorter, longer, or substituted homologues as well as compounds bearing C1 substitutions were inactive, which was rationalized by docking studies using the recently described crystal structure of human TLR8. The best-in-class compound displayed,prominent proinflammatory cytokine induction (including interleukin-12 and interleukin-18), but was bereft of interferon-alpha inducing properties, confirming its high selectivity for human TLR8.
[EN] TOLL-LIKE RECEPTOR 8 AGONISTS<br/>[FR] AGONISTES DES RÉCEPTEURS TOLL-LIKE 8
申请人:UNIV KANSAS
公开号:WO2015095780A1
公开(公告)日:2015-06-25
Compounds described herein can be used for therapeutic purposes. The compounds can be TLR agonists, such as TLR8 agonists. The compounds can be included in pharmaceutical compositions and used for therapies were being a TLR8 agonist is useful. The pharmaceutical compositions can include any ingredients, such as carries, diluents, excipients, fillers or the like that are common in pharmaceutical compositions. The compounds can be those illustrated or described herein as well as derivative thereof, prodrug thereof, salt thereof, or stereoisomer thereof, or having any chirality at any chiral center, or tautomer, polymorph, solvate, or combinations thereof. As such, the compounds can be used as adjuvants in vaccines as well as for other therapeutic purposes described herein. The compounds can have any one of the formulae described herein or derivative thereof.
Compounds described herein can be used for therapeutic purposes. The compounds can be TLR agonists, such as TLR8 agonists. The compounds can be included in pharmaceutical compositions and used for therapies were being a TLR8 agonist is useful. The pharmaceutical compositions can include any ingredients, such as carries, diluents, excipients, fillers or the like that are common in pharmaceutical compositions. The compounds can be those illustrated or described herein as well as derivative thereof, prodrug thereof, salt thereof, or stereoisomer thereof, or having any chirality at any chiral center, or tautomer, polymorph, solvate, or combinations thereof. As such, the compounds can be used as adjuvants in vaccines as well as for other therapeutic purposes described herein. The compounds can have any one of the formulae described herein or derivative thereof.
Compounds described herein can be used for therapeutic purposes. The compounds can be TLR agonists, such as TLR8 agonists. The compounds can be included in pharmaceutical compositions and used for therapies were being a TLR8 agonist is useful. The pharmaceutical compositions can include any ingredients, such as carries, diluents, excipients, fillers or the like that are common in pharmaceutical compositions. The compounds can be those illustrated or described herein as well as derivative thereof, prodrug thereof, salt thereof, or stereoisomer thereof, or having any chirality at any chiral center, or tautomer, polymorph, solvate, or combinations thereof. As such, the compounds can be used as adjuvants in vaccines as well as for other therapeutic purposes described herein. The compounds can have any one of the formulae described herein or derivative thereof.
Exquisite Selectivity for Human Toll-Like Receptor 8 in Substituted Furo[2,3-<i>c</i>]quinolines
作者:Hari Prasad Kokatla、Diptesh Sil、Subbalakshmi S. Malladi、Rajalakshmi Balakrishna、Alec R. Hermanson、Lauren M. Fox、Xinkun Wang、Anshuman Dixit、Sunil A. David
DOI:10.1021/jm400694d
日期:2013.9.12
Toll-like receptor (TLR)-8 agonists activate adaptive immune responses by inducing robust production of T helper 1-polarizing cytokines, suggesting that TLR8-active compounds may be promising candidate adjuvants. We synthesized and evaluated hitherto unexplored furo[2,3-d]quinolines and regioisomeric furo[3,2-c]quinolines derived via a tandem, one-pot Sonogashira coupling and intramolecular 5-endo-dig cyclization strategy in a panel of primary screens. We observed a pure TLR8-agonistic activity profile in select furo[2,3-c]quinolines, with maximal potency conferred by a C2-butyl group (EC50 = 1.6 mu M); shorter, longer, or substituted homologues as well as compounds bearing C1 substitutions were inactive, which was rationalized by docking studies using the recently described crystal structure of human TLR8. The best-in-class compound displayed,prominent proinflammatory cytokine induction (including interleukin-12 and interleukin-18), but was bereft of interferon-alpha inducing properties, confirming its high selectivity for human TLR8.