If you dont wanna stick to a skyteam airline you could fly Emirates to Abidjan and then connect to OUA from there, you can get miles with EK on Delta and continental FF programs.Or another cheap option would be if you can get a cheap ticket to BKK you can get on a Ethiopian Airlines flight from there to Abidjan or Bamako for about $2000 in J class then it is just a short hop to OUA, i heard that ET in J class isnt bad at all and of course they are way cheaper then AF.