Structure−Activity Relationship of an Ozonide Carboxylic Acid (OZ78) againstFasciola hepatica
摘要:
In this paper, we describe the SAR of ozonide carboxylic acid OZ78 (1) as the first part of our search for a trematocidal synthetic peroxide drug development candidate. We found that relatively small structural changes to 1 resulted most commonly in loss of activity against Fasciola hepatica in vivo. A spiro-adamantane substructure and acidic functional group (or ester prodrug) were required for activity. Of 26 new compounds administered at single 100 mg/kg oral doses to F. hepatica infected rats, 8 had statistically significant worm burden reductions, 7 were partially curative, and 1 (acylsulfonamide 6) was completely curative and comparable to 1 in flukicidal efficacy. This study also showed that the activity of 1 is peroxide-bond-dependent, suggesting that its flukicidal efficacy depends upon hemoglobin digestion in F. hepatica.
PROCESS FOR THE PREPARATION OF DISPIRO 1,2,4-TRIOXOLANE ANTIMALARIALS (OZ277)
申请人:Yadav Gyan Chand
公开号:US20110124886A1
公开(公告)日:2011-05-26
This invention relates to an improved process for the preparation of a compound of Formula (I), salts of the free base cis-adamantane-2-spiro-3′-8′-[[[(2′-amino-2′-methyl propyl)amino]carbonyl]methyl]-1′,2′,4′-trioxaspiro[4.5]decane wherein X can be an anion.
Process for the preparation of dispiro 1,2,4-trioxolane antimalarials (OZ277)
申请人:Yadav Gyan Chand
公开号:US08569519B2
公开(公告)日:2013-10-29
This invention relates to an improved process for the preparation of a compound of Formula (I), salts of the free base cis-adamantane-2-spiro-3′-8′-[[[(2′-amino-2′-methyl propyl)amino]carbonyl]methyl]-1′,2′,4′-trioxaspiro[4.5]decane wherein X can be an anion.
The Structure−Activity Relationship of the Antimalarial Ozonide Arterolane (OZ277)
作者:Yuxiang Dong、Sergio Wittlin、Kamaraj Sriraghavan、Jacques Chollet、Susan A. Charman、William N. Charman、Christian Scheurer、Heinrich Urwyler、Josefina Santo Tomas、Christopher Snyder、Darren J. Creek、Julia Morizzi、Maria Koltun、Hugues Matile、Xiaofang Wang、Maniyan Padmanilayam、Yuanqing Tang、Arnulf Dorn、Reto Brun、Jonathan L. Vennerstrom
DOI:10.1021/jm901473s
日期:2010.1.14
The structure and stereochemistry of the cyclohexane substituents of analogues of arterolane (OZ277) had little effect on potency against in vitro. Weak base functional groups were not required for high antimalarial potency, but they were essential for high antimalarial efficacy in P. berghei-infected mice. Five new ozonides with antimalarial efficacy and ADME profiles superior or equal to that of arterolane were identified.