Petasites formosanus Kitam.

Entadamide A (compound 1) is a tryptophan derivative. Entadamide A prevents tryptophan depletion by inhibiting indoleamine 2, 3-dioxygenase (IDO), thereby inhibiting HIV replication. Entadamide A can be used in drug and neuropsychiatric studies of redesivir [1].

Bakkenolide W is a bakkenolide sesquiterpenoid that can be found in the roots of Petasites formosanus.

Bakkenolide Fa is a member of the Bakkenolide family. Bakkenolide Fa is isolated from the roots of Petasites formosanus.

Bakkenolide Zb is a bakkenolide-type sesquiterpenoid compound. Bakkenolide Zb is isolated from the roots of Petasites formosanus.

Bakkenolide T is a bakkenolide-type sesquiterpene that is found in the roots of Petasites formosanus. Bakkenolide T bears a cis-3-methylsulfinylacryloyloxy group (with the sulfur atom in R configuration) at the C-1 position and an isovaleroyloxy group at the C-9 position.

Bakkenolide K is a bakkenolide-type sesquiterpene. Bakkenolide K occurs in Petasites species.

Bakkenolide P is a Bakkenolide. Bakkenolide P can be isolated from the roots of Petasites formosanus.

Bakkenolide M is a bakkenolide-type sesquiterpene that is found in the roots of Petasites formosanus. Bakkenolide M bears a 2-methylbutyroyloxy group at the C-1 position and an isobutyroyloxy group at the C-9 position.

Bakkenolide Za is a bakkenolide-type sesquiterpenoid compound. Bakkenolide Za can be isolated from the roots of Petasites formosanus.

Bakkenolide Fb is a type of Bakkenolide. Bakkenolide Fb can be isolated from the roots of Petasites formosanus.

Bakkenolide Db is a compound that can be isolated from the root of Petasites formosanus. Bakkenolide Db may have cytotoxicity.

Bakkenolide III is a Sesquiterpenoids product that can be isolated from the roots of Petasites formosanus..

1-Oxobakkenolide S is a Sesquiterpenoids product that can be isolated from the roots of Petasites formosanus.

Entadamide A 2'-O-(6''-O-β-D-glucopyranosyl)-β-D-glucopyranoside (MFLNH I) (compound 5) can be isolated from the seed kernel of Entada rheedei. Entada rheedei is a medicinal plant from Thailand that is used to suppress stomach pain.