Andrograpalides A-N (1-14), fourteen previously undescribed ent-labdane-type diterpenoids, together with a previously undescribed naturally occurring diterpenoid (15) and two known analogues (16-17), were isolated from the leaves of Andrographis paniculata. Their structures were unambiguously elucidated via extensive spectroscopic analysis, electronic circular dichroism analysis, and X-ray crystallographic studies. Structurally, compounds 1-8 and 16 are rare cases of 19-nor labdane-type diterpenoids with an unusual C