. Biochemical systematics. Biochemical variation; Botany. ALKALOIDS 161 In contrast, many of the indole alkaloids such as strychnine (see below) are quite complex. Sometimes it is impossible to deter- mine whether certain of these alkaloids are reduced indole or reduced isoquinoline derivatives (for example, some Erythrina alkaloids such as erysopin). Therefore, the systematic distribution may provide clues to the interpretation of the alkaloid's biosynthetic affinities. Rep- resentative indole alkaloids are the following: H3CO CH,. CH3 CH3 harmine physostigmine. Please note that these images
. Biochemical systematics. Biochemical variation; Botany. ALKALOIDS 161 In contrast, many of the indole alkaloids such as strychnine (see below) are quite complex. Sometimes it is impossible to deter- mine whether certain of these alkaloids are reduced indole or reduced isoquinoline derivatives (for example, some Erythrina alkaloids such as erysopin). Therefore, the systematic distribution may provide clues to the interpretation of the alkaloid's biosynthetic affinities. Rep- resentative indole alkaloids are the following: H3CO CH,. CH3 CH3 harmine physostigmine. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Alston, Ralph E; Turner, B. L. (Billie Lee), 1925-. Englewood Cliffs, N. J. , Prentice-Hall
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