Assertion: alkaloid | /r/HasProperty | isolated
Facets:
value: from plants
type: LOCATION
value: from animals
type: OTHER
value: directly
type: MANNER
value: from butterflies
type: OTHER
value: from certain moths
type: OTHER
value: from a succession of medicinal plants
type: OTHER
Source sentences:
text: The first alkaloid to be isolated and crystallized was the potent active constituent of the opium poppy, morphine, in about 1804.
text: Alkaloids are a large and complex group of cyclic compounds that contain N. About 2,000 different alkaloids have been isolated, some of which are of pharmacological interest.
text: Many alkaloids can be isolated directly from the alkoholic extract by chromatographic methods.
text: Alkaloids were isolated from a succession of medicinal plants, starting with morphine from the poppy in 1806, and soon followed by ipecacuanha and strychnos in 1817, quinine from the cinchona tree, and then many others.
text: These dilemmas merit attention nowadays, more than 200 years after the first alkaloid was isolated.
text: Many alkaloids can be isolated directly from the alkoholic extract by chromatographic methods.
text: More than 6,000 alkaloids have been isolated from plants and animals, and nearly one hundred have been used or tested in clinical practice.
text: More than 6,000 alkaloids have been isolated from plants and animals, and nearly one hundred have been used or tested in clinical practice.
text: Almost all the alkaloids of the Amaryllidaceae have been isolated and studied structurally since 1953, and infrared and ultraviolet absorption spectra have been invaluable aids in this work.
text: (Phytochemistry, 1993, 34, 1281) found these compounds to be present in the tubers and leaves of potato plants and that these alkaloids can be isolated from certain moths and butterflies, the larvae of which feed on the plant.