Many chemicals are naturally derived so sorting threw the blue tables at the bottom of wiki can provide many good starts.....
magnolia tree bark
amanita muscaria
Valerian root
Passifloria
sorry i to lazy to provide links, but these are some anxiolitics..
Amentoflavone is a biflavonoid (bis-apigenin coupled at 8 and 3' positions, or 3′,8′′-biapigenin) constituent of a number of plants including Ginkgo biloba, Chamaecyparis obtusa (hinoki), Hypericum perforatum (St. John’s Wort)[1] and Xerophyta plicata.[2]
Apigenin is found in many fruits and vegetables, but parsley, celery, celeriac, and chamomile tea are the most common sources.[19] Apigenin is particularly abundant in the flowers of chamomile plants, constituting 68% of total flavonoids.[16]
Baicalin is found in several species in the genus Scutellaria, including Scutellaria baicalensis and Scutellaria lateriflora. There are 10 mg/g baicalin in Scutellaria galericulata leaves.[1] It is one of the chemical ingredients of Sho-Saiko-To, an herbal supplement. It is also present in the bark isolate of the Oroxylum indicum tree.
Wogonin is an O-methylated flavone, a flavonoid-like chemical compound which was found in Scutellaria baicalensis.[2]
Safranal is an organic compound isolated from saffron, the spice consisting of the stigmas of crocus flowers (Crocus sativus). It is the constituent primarily responsible for the aroma of saffron.
Isovaline is a rare amino acid transported to earth by the Murchison meteorite, which landed in Australia in 1969. The discovery of isovaline in the biosphere demonstrates an extraterrestrial origin of amino acids and has been linked to the homochirality of life on earth [1] suggesting a role in the origin of life.[2]