A natural product is a chemical compound or substances that are produced by a living organism. Natural products include any substance produced by living forms. By chemical synthesis i.e., semi synthetically and total synthetically natural products are also produced and have played a central role in the development of the field of organic chemistry by providing challenging synthetic targets. The term natural product is also extended for commercial purposes such as cosmetics, dietary supplements, and foods produced from natural sources without added artificial ingredients. Some natural products are pharmacological or biological activity that will help therapeutic in treating diseases. Natural products are the active components not only of most traditional medicines but also many modern medicines. Due to structural diversity of natural products they are easily synthesis by chemical processes and synthetic analogs are also prepared with improved potency and safety, natural products are often used as starting points for drug discovery.
Open access to the scientific literature means the removal of barriers (including price barriers) from accessing scholarly work. There are two parallel roads towards open access: Open Access articles and self-archiving. Open Access articles are immediately, freely available on their Web site, a model mostly funded by charges paid by the author (usually through a research grant). The alternative for a researcher is âself-archivingâ (i.e., to publish in a traditional journal, where only subscribers have immediate access, but to make the article available on their personal and/or institutional Web sites (including so-called repositories or archives)), which is a practice allowed by many scholarly journals. Open Access raises practical and policy questions for scholars, publishers, funders, and policymakers alike, including what the return on investment is when paying an article processing fee to publish in an Open Access articles, or whether investments into institutional repositories should be made and whether self-archiving should be made mandatory, as contemplated by some funders.
Last date updated on September, 2014