Three new terpenoid indole alkaloids, vidolicine (1), normacusine B N-oxide (2), and lochnerine N-oxide (3), together with seven known ones (4-10), were isolated from whole plants of Catharanthus roseus. Their structures were elucidated by spectroscopic methods (NMR, MS, UV, and IR). Cytotoxic
Catharanthus roseus (L.) G. Don, also known as Madagascar periwinkle or Sadabahar, is a herbaceous plant belonging to the family Apocynaceae. Being a reservoir for more than 200 alkaloids, it reserves a place for itself in the list of important medicinal plants. Secondary metabolites are present in