Patent ID: 7265086

Claim:
A compound of the formula: or a pharmaceutically acceptable salt or stereoisomer thereof; wherein R g and R 20 are selected from: R g R 20 —(CH 2 ) 11 CH 3 —(CH 2 ) 12 CH 3 —CH 2 CH 2 —NH—(CH 2 ) 9 CH 3 —CH 2 CH 2 —NH—(CH 2 ) 9 CH 3 —CH 2 CH 2 —S—(CH 2 ) 9 CH 3 —CH 2 CH 2 —O—(CH 2 ) 9 CH 3 —CH 2 CH 2 —NH—(CH 2 ) 9 CH 3 —CH 2 CH 2 —S—(CH 2 ) 9 CH 3 —CH 2 CH 2 —O—(CH 2 ) 9 CH 3