65  US 7,511,179 B2  66  -continued  -continued  (S-108)  (S-98)  (S-100)  (S-101)  (S-99)  (S-109)  (S-110)  (S-111)  (S-112)  (S-113)  (S-114)  (S-102)  (S-103) 35  (S-104)  (S-105)  (S-115)  (S-116)  (S-117)  (S-118)  (S-119)  (S-106)  (S-107)  t-Bu-~  ~+,.,,.-i-Pr  s  x- i  CF3  Ph-~  ~+/Me  s  x- i  CF3  Me’-.+  /Bu  s  x- i  CF3  Bu’-.+ /Bu  s  x- i  CF3  0  s  x- i  CF3 