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From lotus receptacle (seed pod of NeJUmbo rmcifera Gcrerfn.), four alkaloids, nuciferine (I), N-nornuciferine (VIII), oxoushinsunine (IX) and N-norasmepavine (X) were isolated. Identification The genus Nelumbo (Nymphaeaceae) produces a lot of aIkaIoids including aporphine, oxoaporphine, proaporphine, tetrahydroisoquinoline, benzyltetrahydroisoquinoline and biscoclaurine*-J). In the course of continuing search for alkaloids from Formosan NeZumbo nucifeera Gaertn., the ethanol extracts of leaf, petiole and seed-embryo were investigated respectively to isoIate seven alkaloids, nuciferine (I), roemerine (II), 0-nornuciferine @ I ) , isoleinsinine (IV), neferine (V), lotusine (VI) and methylcorypalline CVII), reported in the earlier paperso--". Up to nov, no studies on the chemical principles of lotus receptacle has been reported. In this paper, we wish to describe the isolation and characterization of alkaloids from receptacle in order to clarify the occurrence and difference of chemical constituents in each part of the whole plant. The receptacle or seed pod of Iotus is called "Lien-fang" (BE?) in Chinese. After the seeds have been removed, it looks something like the nozzle Of a garden sprinkler. Its medicinal action is regarded as antihemorrhagic and it is also empIoyed to promote the expulsion of the afterbirth and in watery decoction to counteract the poison o€ deleterious fungi in Chinese drugss). From seed pod, there are four bases (A, B, C and D) obtained from the alcoholic extract. A detailed descriPtion of extraction and isolation procedure was given in the experimental part.
From lotus receptacle (seed pod of NeJUmbo rmcifera Gcrerfn.), four alkaloids, nuciferine (I), N-nornuciferine (VIII), oxoushinsunine (IX) and N-norasmepavine (X) were isolated. Identification The genus Nelumbo (Nymphaeaceae) produces a lot of aIkaIoids including aporphine, oxoaporphine, proaporphine, tetrahydroisoquinoline, benzyltetrahydroisoquinoline and biscoclaurine*-J). In the course of continuing search for alkaloids from Formosan NeZumbo nucifeera Gaertn., the ethanol extracts of leaf, petiole and seed-embryo were investigated respectively to isoIate seven alkaloids, nuciferine (I), roemerine (II), 0-nornuciferine @ I ) , isoleinsinine (IV), neferine (V), lotusine (VI) and methylcorypalline CVII), reported in the earlier paperso--". Up to nov, no studies on the chemical principles of lotus receptacle has been reported. In this paper, we wish to describe the isolation and characterization of alkaloids from receptacle in order to clarify the occurrence and difference of chemical constituents in each part of the whole plant. The receptacle or seed pod of Iotus is called "Lien-fang" (BE?) in Chinese. After the seeds have been removed, it looks something like the nozzle Of a garden sprinkler. Its medicinal action is regarded as antihemorrhagic and it is also empIoyed to promote the expulsion of the afterbirth and in watery decoction to counteract the poison o€ deleterious fungi in Chinese drugss). From seed pod, there are four bases (A, B, C and D) obtained from the alcoholic extract. A detailed descriPtion of extraction and isolation procedure was given in the experimental part.
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