Unnatural Species Research Articles

Kent Biyoçeşitliliği ve Kültürel Değişim Açısından Dış Mekan Süs Bitkilerinin Değerlendirilmesi: Niğde Kenti Örneği

Plant species used in urban settlements play an important role in cultural change and biodiversity determination. In the past, people have used many plant species to beautify their gardens by giving importance to flowering plants. Biodiversity can be determined by using the distribution of flowering plant species that have traditionally been preferred as species and in urban settlements. In this study, when the plants used in the settlement areas were investigated, 132 plant species belonging to 39 families were identified in a total of 200 sample areas. Five different residential areas were evaluated in the study. These can be listed as detached houses, traditional houses, villa houses, site, mass housing. It has been determined that non-natural species are used extensively in the research areas. It is observed that plant species natural plants and containing fruit are given priority in traditional gardens. It has been determined that unnatural species are used in other house types. For the continuity and protection of natural plant species, the garden order of traditional houses has been found more valuable.

ベンゾ［c］フェナンスリジン·アルカロイドおよび関連化合物の合成研究

Benzo[c]phenanthridine alkaloids are distributed in Papaveraceous and Rutaceous plants and classified into two categories of fully aromatized bases and partially hydrogenated bases(B/C-cis-11-hydroxyhexahydrobenzo[c]phenanthridine skeleton). They have long history, in which the first isolation of chelidonine, a partially hydrogenated base, from Papaveraceous plant, was reported in 1839. Over a century later nitidine and fagaronine, O4-type fully aromatized bases isolated from Rutaeceous plant, attracted much attention because of their antitumor activity. At present, a variety of pharmacological effects are recognized in natural and unnatural species. We, about forty years ago, started synthetic studies on fully aromatized bases focusing on structure-activity relationship of antitumor activity and succeeded in establishing widely-applicable synthetic methods. Recently the enantioselective synthesis of chelidonine was completed. Thus, in this review, we present our chemical history for the synthesis of benzo[c]phenanthridine bases.