Structure des caboxines: Alcaloïdes oxindoliques du Cabucala fasciculata
摘要:
摘要 通过与利血平的化学相关性阐明了三种新的 11-单甲氧基五环羟吲哚生物碱的结构:caboxine-A 属于同种异体 C 19 -甲基 α 系列:3 S , 4 R , 7 S , 19 S ;异卡波碱-A 和 B 到表异基 C 19 -甲基 α 系列并分别具有以下构型 3 R 、4 S 、7 S 、 19 S 和 3 R 、 4 S 、 7 R 、 19 S 。
Inducing granulation tissue in third-degree skin burns using topical Hamelia patens extract
申请人:Berry Don Wayne
公开号:US10383908B1
公开(公告)日:2019-08-20
Methods are provided for inducing granulation tissue on third-degree burns present on the skin of a mammalian subject, which includes human subjects. A method according to the disclosure comprises contacting a third-degree burn wound with an extract of Hamelia patens, in combination with a dermatologically-acceptable carrier. Methods according to the disclosure are applicable to chemically-induced, electrically-induced, and thermally-induced third-degree burn wounds on skin.
Process for extracting alpha yohimbine (rauwolscine) from Rauwolfia species
申请人:Goel Pawan Kumar
公开号:US10730869B2
公开(公告)日:2020-08-04
Present invention discloses a novel, commercially viable process for extraction of Alpha yohimbine from the bark, stem and leaves of Rauwolfia species. The extract is obtained by a precipitation method involving alternate steps of acidification and alkalization along with use of specific organic solvents. The extract gives higher yield of 7-8 fold as compared to other processes and without use of any column chromatography at all. Yield of alpha yohimbine from roots and leaves of Rauwolfia canescens by process of present invention was 0.017% and 0.4% respectively, indicating that leaves are a much better source. The HPLC analysis of the compound obtained indicated a purity of >90%.