Chrysosplenium fallax Koldaeva,recently discovered and collected in Yanji,Jilin Province,repre-sents a newly recorded species of Saxifragaceae in China.This species,native to the Russian Far East,was first described a...Chrysosplenium fallax Koldaeva,recently discovered and collected in Yanji,Jilin Province,repre-sents a newly recorded species of Saxifragaceae in China.This species,native to the Russian Far East,was first described as a new species in 2021.Based on precise field investigations and specimen examination,we provide a comprehensive description of C.fallax and its seed micromorphology.Phylogenetic analysis based on chloroplast genomes of 45 Chrysosplenium species confirmed the systematic position of C.fallax in Chrysosplenium.Voucher specimens were deposited in the Herbarium of South-Central Minzu University(HSN).展开更多
The com pound bergenin w asisolated from theaerialpartsofBergenia pur- purascens. Allprotonsand carbons ofthe com pound w ereassigned and its structure w as char- acterized as 4-m ethoxy-2-[tetrahydro-3,4,5-trihydroxy...The com pound bergenin w asisolated from theaerialpartsofBergenia pur- purascens. Allprotonsand carbons ofthe com pound w ereassigned and its structure w as char- acterized as 4-m ethoxy-2-[tetrahydro-3,4,5-trihydroxy-6-(hydroxym ethyl)pyran-2-yl]-α-re- sorcylic acid δ-lactone by using 1H-1H DQF-COSY, 1H-13CHMQCand HMBC. This w ork will be helpfulto the chem icalstructure studies ofthe sim ilar new ArylC-glycoside com pounds by m eans ofNMRspectroscopy.展开更多
文摘Chrysosplenium fallax Koldaeva,recently discovered and collected in Yanji,Jilin Province,repre-sents a newly recorded species of Saxifragaceae in China.This species,native to the Russian Far East,was first described as a new species in 2021.Based on precise field investigations and specimen examination,we provide a comprehensive description of C.fallax and its seed micromorphology.Phylogenetic analysis based on chloroplast genomes of 45 Chrysosplenium species confirmed the systematic position of C.fallax in Chrysosplenium.Voucher specimens were deposited in the Herbarium of South-Central Minzu University(HSN).
文摘The com pound bergenin w asisolated from theaerialpartsofBergenia pur- purascens. Allprotonsand carbons ofthe com pound w ereassigned and its structure w as char- acterized as 4-m ethoxy-2-[tetrahydro-3,4,5-trihydroxy-6-(hydroxym ethyl)pyran-2-yl]-α-re- sorcylic acid δ-lactone by using 1H-1H DQF-COSY, 1H-13CHMQCand HMBC. This w ork will be helpfulto the chem icalstructure studies ofthe sim ilar new ArylC-glycoside com pounds by m eans ofNMRspectroscopy.
