{"id":8662,"date":"2024-08-14T18:54:57","date_gmt":"2024-08-14T18:54:57","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=8662"},"modified":"2024-08-14T18:54:57","modified_gmt":"2024-08-14T18:54:57","slug":"two-new-lignans-in-rhododendron-grandiflorum","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/tr\/rhododendron-grandiflorumda-i\u0307ki\u0307-yeni\u0307-lignan\/","title":{"rendered":"Rhododendron grandiflorum'da iki yeni lignan"},"content":{"rendered":"<p>Rhododendron grandiflorum'da iki yeni lignan<br \/>\n\u0130nce ormang\u00fcl\u00fc veya ince nar \u00e7i\u00e7e\u011fi olarak da bilinen Rhododendron minutiflorum, Rhododendron ailesindeki Rhododendron L. t\u00fcr\u00fcnden bir bitkidir. Genellikle 1120-1430 m y\u00fckseklikteki tepelik alanlarda bulunur ve \u00e7o\u011funlukla \u00c7in'in Guangxi ve Guangdong eyaletlerinde \u00fcretilir. Bu cinsteki bir\u00e7ok bitki, anti-enflamatuar ve analjezik farmakolojik etkilere sahip olan ve romatoid artrit ve kardiyovask\u00fcler hastal\u0131k gibi hastal\u0131klar\u0131n tedavisinde kullan\u0131labilen R. molle gibi y\u00fcksek t\u0131bbi ve ekonomik de\u011fere sahiptir; yayg\u0131n olarak kullan\u0131lan bir Tibet ilac\u0131 olan R. athopogonoide, \u00f6ks\u00fcr\u00fck ve ast\u0131m\u0131 hafifletme, \u0131s\u0131y\u0131 temizleme ve detoksifiye etme etkilerine sahiptir. Modern kromatografik ay\u0131rma ve spektroskopik tekniklerin h\u0131zla geli\u015fmesiyle, Rhododendron bitkilerinin kimyasal bile\u015fimi ve farmakolojik aktivitesi \u00fczerine yap\u0131lan ara\u015ft\u0131rmalar hem yurt i\u00e7inde hem de uluslararas\u0131 alanda s\u00fcrekli derinle\u015fmekte ve sistematik hale gelmektedir. Son y\u0131llarda, kumarinler, lignanlar, flavonoidler ve terpenler de dahil olmak \u00fczere bu cins bitkilerden yap\u0131sal olarak yeni ve olduk\u00e7a aktif bir\u00e7ok kimyasal bile\u015fik izole edilmi\u015ftir. Bir\u00e7ok bile\u015fik hipoglisemik, anti-t\u00fcm\u00f6r, anti-inflamatuar, antibakteriyel, insektisidal ve antioksidan \u00f6zellikler gibi \u00f6nemli biyolojik aktiviteler sergilemektedir.<\/p>\n<p>Rhododendron bitkilerinin hipoglisemik aktivitesi hem yurt i\u00e7inde hem de yurt d\u0131\u015f\u0131nda ara\u015ft\u0131rmac\u0131lar i\u00e7in her zaman b\u00fcy\u00fck bir endi\u015fe kayna\u011f\u0131 olmu\u015ftur. Choi ve arkada\u015flar\u0131 R Rhododendron asit A ve brachycarpum'dan izole edilen ursolik asit, s\u0131ras\u0131yla (6,3 \u00b1 0,6) ve (3,1 \u00b1 0,3) \u03bc mol\/L IC50 de\u011ferleri ile temel ins\u00fclin sinyal enzimi PTP1B'ye kar\u015f\u0131 g\u00fc\u00e7l\u00fc inhibit\u00f6r aktivite sergilemektedir. Liao ve ark. R'den PTP1B inhibit\u00f6r aktivitesine sahip bir \u00e7ift enantiyomer (-)- rodonoid B ve (+)- rodonoid B, s\u0131ras\u0131yla (43,56 \u00b1 8,53) ve (30,38 \u00b1 13,41) \u03bc mol\/L IC50 de\u011ferleri ile Capitalum'dan izole edilmi\u015ftir. R Arboreum'dan izole edilen 3-O-asetillursorolik asit, 3,3 \u00b1 0,1 \u03bc mol\/L IC50 de\u011feri ile alfa glukozidaza kar\u015f\u0131 \u00f6nemli inhibit\u00f6r aktivite sergilemi\u015ftir. Muhammad ve arkada\u015flar\u0131, Schlippenbachii kabu\u011fundan elde edilen 80% metanol ham ekstrakt\u0131n\u0131n etil asetat ve diklorometan ekstraktlar\u0131n\u0131n \u03b1-glukozidaz aktivitesini etkili bir \u015fekilde inhibe edebildi\u011fini ve farelerde kan glukoz konsantrasyonunu azaltabildi\u011fini ke\u015ffetmi\u015ftir.<\/p>\n<p>Xiaohua Rhododendron, Rhododendron cinsine aittir ve \u015fu anda Xiaohua Rhododendron'un kimyasal bile\u015fimi ve farmakolojik aktivitesi hakk\u0131nda hem yurt i\u00e7inde hem de yurt d\u0131\u015f\u0131nda herhangi bir rapor bulunmamaktad\u0131r. Bunu g\u00f6z \u00f6n\u00fcnde bulundurarak, bu makale Rhododendron simsii'nin 95% etanol ekstresinin etil asetat ekstresinin kimyasal bile\u015fimini incelemi\u015f ve Rhododendron simsii'nin daha da geli\u015ftirilmesi ve kullan\u0131m\u0131 i\u00e7in referans ve bilimsel temel sa\u011flamak amac\u0131yla izole edilen monomer bile\u015fiklerin \u03b1-glukozidaz inhibit\u00f6r aktivitesini taram\u0131\u015ft\u0131r.<\/p>\n<p>Bu deneyde, Rhododendron simsii'nin 95% etanol ekstrakt\u0131n\u0131n kimyasal bile\u015fimi ve in vitro \u03b1-glukozidaz inhibit\u00f6r aktivitesi incelenmi\u015ftir. Lignanlar, flavonoidler ve fenolik bile\u015fikler dahil olmak \u00fczere dokuz bile\u015fik izole edilmi\u015f ve tan\u0131mlanm\u0131\u015ft\u0131r. Bunlar aras\u0131nda, bile\u015fik 1 do\u011fal \u00fcr\u00fcnlerde nispeten nadir bulunan benzofuran tipi bir lignan, bile\u015fik 2 yeni bir fenildihidronaftalen tipi lignan ve geri kalan bile\u015fiklerin t\u00fcm\u00fc Rhododendron simsii'den ilk kez izole edilmi\u015ftir. Bile\u015fik 2 d\u0131\u015f\u0131nda kalan 8 bile\u015fi\u011fin \u03b1-glukozidaz inhibit\u00f6r aktivitesini test etmek i\u00e7in PNPG y\u00f6ntemi kullan\u0131lm\u0131\u015ft\u0131r. Sonu\u00e7lar, 8 ve 9 numaral\u0131 bile\u015fiklerin iyi \u03b1-glukozidaz inhibit\u00f6r aktivitesine sahip oldu\u011funu ve deneyden elde edilen sonu\u00e7lar\u0131n di\u011fer ara\u015ft\u0131rma literat\u00fcr\u00fcnde bildirilenlerle benzer oldu\u011funu g\u00f6stermi\u015ftir. Bu nedenle, apigenin ve kaempferol\u00fcn Rhododendron simsii'nin in vitro hipoglisemik aktivitesi i\u00e7in \u00f6nemli materyal temelleri oldu\u011fu tahmin edilmektedir. Bu deney, Rhododendron fortunei'nin kimyasal bile\u015fimi ve \u03b1-glukozidaz inhibit\u00f6r aktivitesi \u00fczerine ilk \u00e7al\u0131\u015fmay\u0131 ger\u00e7ekle\u015ftirmi\u015f ve bitki kimyasal kaynaklar\u0131n\u0131n rasyonel geli\u015fimi ve kullan\u0131m\u0131 i\u00e7in bir referans sa\u011flam\u0131\u015ft\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"<p>Two new lignans in Rhododendron grandiflorum Rhododendron minutiflorum, also known as slender rhododendron or slender pomegranate flower, is a plant of Rhododendron L. in the Rhododendron family. It is commonly found in hilly areas at an altitude of 1120-1430m and is mainly produced in Guangxi and Guangdong provinces in China. Many plants in this genus [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Two new lignans in Rhododendron grandiflorum - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/tr\/rhododendron-grandiflorumda-i\u0307ki\u0307-yeni\u0307-lignan\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Two new lignans in Rhododendron grandiflorum - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Two new lignans in Rhododendron grandiflorum Rhododendron minutiflorum, also known as slender rhododendron or slender pomegranate flower, is a plant of Rhododendron L. in the Rhododendron family. It is commonly found in hilly areas at an altitude of 1120-1430m and is mainly produced in Guangxi and Guangdong provinces in China. 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It is commonly found in hilly areas at an altitude of 1120-1430m and is mainly produced in Guangxi and Guangdong provinces in China. 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