Zobrazeno 1 - 10
of 244
pro vyhledávání: '"H. Ziffer"'
Publikováno v:
Journal of Liquid Chromatography & Related Technologies. 23:909-913
A series of solvent systems was developed for CCC to separate mixtures containing variable amounts of artemisinin, artemi-sitene, and arteannuin B. To purify multigram quantities of artemisinin by CCC it was necessary to maximize the amount of a mixt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd97ae53ba9eac336a7943f91a24e28a
https://doi.org/10.1081/jlc-100101497
https://doi.org/10.1081/jlc-100101497
Publikováno v:
Journal of Liquid Chromatography & Related Technologies. 21:195-201
A rapid, efficient separation of multigram quantities of 2- and 6-nitro-4-chloro-3-methoxybenzoic acid was achieved by pH-zone-refining CCC.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ece0c22528bcab9cdb3ee7adb1d6b9e3
https://doi.org/10.1080/10826079808001948
https://doi.org/10.1080/10826079808001948
Publikováno v:
Journal of Liquid Chromatography. 17:3507-3517
Multigram quantities of 2- and 6-nitro-3-acetamido-4-chlorobenzoic acids were separated by pH-zone-refining CCC. A two-phase solvent system composed of methyl tertiary-butyl ether, acetonitrile and water was employed using trifluoroacetic acid as a d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10f6d13b969ad49b48aa5deecbde6ab4
https://doi.org/10.1080/10826079408013527
https://doi.org/10.1080/10826079408013527
Publikováno v:
ChemInform. 28
For thousands of years, physicians in China have treated fever with a decoction of the plant qinghao (1). In 1972 Chinese chemists isolated the active febrifuge from this plant, determining its structure, 1, by single crystal x-ray crystallography (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::038f584f1e575c39f5825718581cbba2
https://doi.org/10.1002/chin.199752305
https://doi.org/10.1002/chin.199752305
Publikováno v:
Fortschritte der Chemie organischer Naturstoffe = Progress in the chemistry of organic natural products. Progres dans la chimie des substances organiques naturelles. 72
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6dcc0c4b70a017fc15703cf5131089ff
https://pubmed.ncbi.nlm.nih.gov/9369092
https://pubmed.ncbi.nlm.nih.gov/9369092
Publikováno v:
Fortschritte der Chemie organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products ISBN: 9783709173428
For thousands of years, physicians in China have treated fever with a decoction of the plant qinghao (1). In 1972 Chinese chemists isolated the active febrifuge from this plant, determining its structure, 1, by single crystal x-ray crystallography (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5debcc867780add881d95cbcc82448d
https://doi.org/10.1007/978-3-7091-6527-0_2
https://doi.org/10.1007/978-3-7091-6527-0_2
Publikováno v:
Antimicrobial agents and chemotherapy. 38(8)
The endoperoxides are a new class of antimalarial agents, of which artemisinin (qinghaosu) is the prototype. We have previously shown that artemisinin is capable of alkylating proteins in model reactions. In the present study, we showed that when Pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73cf82d1e776ec530fa735ca1ddeecad
https://pubmed.ncbi.nlm.nih.gov/7986020
https://pubmed.ncbi.nlm.nih.gov/7986020
Publikováno v:
Tetrahedron. 20:67-70
A study of the optical rotary dispersion curves of occidentalol and an unsaturated ketone derived from tetrahydrooccidentol indicate that the absolute stereochemistry of the hydrogen and methyl group at the ring junction is ββ. The absolute stereoc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c888c2ee32e632b75a025a0b3aa596e
https://doi.org/10.1016/s0040-4020(01)98397-8
https://doi.org/10.1016/s0040-4020(01)98397-8
Publikováno v:
Tetrahedron. 22:3011-3020
The photodimerization of (−)-piperitone has been re-investigated and the previously described three photodimers have been isolated. From a study of the dipole moments and natural abundance C13—H NMR spectra, it has been established conclusively t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::429ba92d2de9722f490f709d97afe19f
https://doi.org/10.1016/s0040-4020(01)82280-8
https://doi.org/10.1016/s0040-4020(01)82280-8