Eight new acylated preatroxigenin saponins 1 ± 8 were isolated as four inseparable mixtures of the transand cis-4-methoxycinnamoyl derivatives, atroximasaponins A 1 /A 2 (1/2), B 1 /B 2 (3/4), C 1 /C 2 (5/6) and D 1 /D 2 (7/8) from the roots of Atroxima congolana. These compounds are the first examp
Acylated Triterpene Saponins from Atroxima libericaStapf
✍ Scribed by Turibio Kuiate Tabopda; Anne-Claire Mitaine-Offer; Tomofumi Miyamoto; Chiaki Tanaka; Jean-François Mirjolet; Olivier Duchamp; Bonaventure Tchaleu Ngadjui; Marie-Aleth Lacaille-Dubois
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- German
- Weight
- 216 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
The four new acylated triterpene saponins 1 -4, isolated as two pairs of isomers and named libericosides A 1 /A 2 and B 1 /B 2 , one pair of isomers 5/6, the (Z)-isomer libericoside C 2 (5) being new, one new sucrose ester, atroximoside (7), and eight known compounds were isolated from the roots of Atroxima liberica by repeated MPLC and VLC on normal and reversed-phase silica gel.
📜 SIMILAR VOLUMES
## Abstract Eight new acylated triterpene saponins **1**–**8** were isolated from the roots of __Polygala arenaria__ as four inseparable (__E__)/(__Z__) mixtures of the 4‐methoxycinnamoyl and 3,4‐dimethoxycinnamoyl derivatives by repeated MPLC over silica gel. Their structures were established main
## Abstract The ten new acylated presenegenin (=(2__β__,3__β__,4__α__)‐2,3,27‐trihydroxyolean‐12‐ene‐23,28‐dioic acid) glycosides 1–10 have been isolated by successive MPLC from the roots of __Polygala myrtifolia__ L. as five inseparable mixtures of the __trans‐__ and __cis‐__4‐methoxycinnamoyl der
Two dammarane-type saponins with a novel aglycone derived from the parent 16,22-epoxy-24methylidenedammarane and lotoside A, a new lotogenin derivative, were isolated from the MeOH extract of the stem bark of the Brazilian medicinal plant Zizyphus joazeiro, in addition to the known saponin 3b-{{O-
Dedicated to Prof. I(. Hiller on the occasion of his 65th birthday (8.XII. 95) Three new saponins 1-3 were isolated from Herniaria glubra by means of prep. HPLC and TLC. The structures were established mainly by a combination of 2D-NMR techniques (COSY, TOCSY, ROESY, HMQC, and HMBC) as 0 -a -L-rhamn
## Abstract Four new triterpenoid saponins, pachystegiosides A (**1**), B (**2**), C (**3**), and D (**4**), were isolated from the roots of __Acanthophyllum pachystegium__ K. H. Their structures were elucidated by means of a combination of homo‐ and heteronuclear 2D‐NMR techniques (COSY, TOCSY, NO