Patent ID: 8293783

Claim:
A method of treating or controlling chronic obstructive pulmonary disease (COPD) comprising administering an effective dose of an artemisinin derivative of formula (2): wherein R 1 and R 2 taken together form a carbonyl (═O), and R 3 and R 4 are independently H, or an optionally substituted group selected from a substituted or non-substituted alkyl, a substituted or non-substituted aryl, a substituted or non-substituted heteroaryl, a substituted or non-substituted arylalkyl, and a substituted or non-substituted heteroarylalkyl or a pharmaceutically acceptable salt or ester thereof; or wherein R 1 is H, and R 2 is —OA, wherein A is H or an optionally substituted group selected from a substituted or non-substituted alkyl, a substituted or non-substituted aryl, a substituted or non-substituted heteroaryl, a substituted or non-substituted arylalkyl, and a substituted or non-substituted heteroarylalkyl; or a pharmaceutically acceptable salt or ester thereof and R 3 and R 4 are independently H or an optionally substituted group selected from a substituted or non-substituted alkyl, a substituted or non-substituted aryl, a substituted or non-substituted heteroaryl, a substituted or non-substituted arylalkyl, and a substituted or non-substituted heteroarylalkyl; or a pharmaceutically acceptable salt or ester thereof.