. Biochemical systematics. Biochemical variation; Botany. OCH3 OCH3 hydrastine (g) Bisbenzylisoquinoline derivatives. These alkaloids consist of two benzylisoquinoline groups joined by one or more ether linkages. Thev' are found in several families including the Magnoliaceae and Berheridaceae, magnoline INDOLE ALKALOIDS This class is probably far more heterogeneous than the two previous classes. Although other mechanisms of formation of the indole nucleus doubtlessly exist, in some cases at least indole is derived from tryptophane metabolism which, in turn, is derived as an early offsho
. Biochemical systematics. Biochemical variation; Botany. OCH3 OCH3 hydrastine (g) Bisbenzylisoquinoline derivatives. These alkaloids consist of two benzylisoquinoline groups joined by one or more ether linkages. Thev' are found in several families including the Magnoliaceae and Berheridaceae, magnoline INDOLE ALKALOIDS This class is probably far more heterogeneous than the two previous classes. Although other mechanisms of formation of the indole nucleus doubtlessly exist, in some cases at least indole is derived from tryptophane metabolism which, in turn, is derived as an early offshoot from the pathway to the aromatic amino acids. Shikimic acid is a parent substance for both groups, and at least in the early stages of their formation all alkaloids discussed so far are likely to have metabolic connections with each other. Some simple indole alkaloids are known (for example, gramine, illustrated below), and it is not surprising to find that they too occur in a number of widely separated families. .CHa -CH2N / CH, gramme. 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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