Carinatine A (1), a C16N2-type Lycopodium alkaloid possessing a 5/6/6/6 ring system formed by a new C-4/C-12 bond, and carinatine B (2), the first derivative of lycojaponicumin C, along 16 known compounds, were isolated from the whole plant of Phlegmariurus carinatus. Their structures were
Eighteen new Lycopodium alkaloids, lycosquarrines A-R (1-18), and eight known alkaloids were isolated from the aerial parts of Phlegmariurus squarrosus. Compounds 1-5 and 19, identified from natural sources for the first time, are uncommon