**2.4 Remarkable discovery of compound**

Generally, alkaloid from the plant has a conspicuous influence upon the central nerve of human even if taking a small quantity alkaloid, very strong action is showed (**Table 2** and **Figure 2**) [7]. The plants which have an alkaloid have restriction of uses or on the list of poisonous plant. However, those alkaloids are used for

**Figure 2.** 

*Diagram of alkaloid compounds of* **Table 2***. (1) Morphine, (2) atropine, (3) pilocarpine, (4) ephedrine, (5) reserpine, (6) lobeline, (7) strychnine, (8) berberine and (9) vinblastine.* 

materials of medical and pharmaceutical products widely. A lot of splendid studies to discover useful alkaloid were reported [8].

Examples of narcotic analgesics are (parentheses indicated trade name):

