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Uzarigenin

Scheme 5. Digitoxigenin and uzarigenin as aglycons of cardiac glycosides... Scheme 5. Digitoxigenin and uzarigenin as aglycons of cardiac glycosides...
Cj chair form [235]. Potential energy calculations of digitoxigenin-a-L-rhamnoside, digitoxigenin-po-digitoxoside, uzarigenin-oc-L-rhamnoside, and uzarigenin-P-D-6 -deoxyallose showed different minima [236]. [Pg.202]

A new amino-glyco-cardenolide, holarosine-A (32), was isolated from the leaves of a Holarrhena antidysenterica from Viet-Nam. Methanolysis of this compound gave the a-L-methylglycoside of L-holantosamine (31) and allo-uzarigenin. ... [Pg.388]

An indication that the 14j8-hydroxyl is not essential for cardiotonic activity comes from the synthesis of 14-desoxy-14)8-uzarigenin. Lithium aluminium hydride reduction and acetylation of the 17 0 -epoxide obtained from the enol acetate (79) gave the 17/ -alcohol (80), which underwent a Serini-Logemann reaction to afford the 14 -pregnane (81). Reformatsky reaction with ethyl bromoacetate and dehydration gave the a -unsaturated ester (82), converted by selenium dioxide to 14-desoxy-14)8-uzarigenin (83). [Pg.417]

I5% total cardenolides Cheirotoxin (k-strophanthidm-giiiomethylosido-glucoside) desglucocheirotoxin, cheiroside A (uzarigenin-fucosido-glucoside)... [Pg.103]

Xysmalobii radix (1) and the pharmaceutical preparation 2 show with CTA reagent the major compounds uzarin (Tl) and xysmalorin (T5) in one prominent blue to yellow-blue fluorescent zone at R, 0.1-0,15, followed by seven blue, lower-concentrated zones with uzarigenin monoglucoside (T2) at R, — 0.35 and uzarigenin (T3) at R, — 0.8. [Pg.114]

Tsehesche, Braihge, ibid. 85, ]042 (1952) Schmid et ai, Heir. Chim. Acta 42, 72 (1959). Yields uzarigenin by enzymic cleavage. Structure Tsehesche, Bohle, Ber. 68,... [Pg.1557]

Structure of uzarigenin Ran gas wami, Reich -stein, Helv. Chim. Acta 32, 939 (]949) Russe] et ai. ibid. 44, 1320 (1961). Untike all other known cardiac glycosides, has the A D-trar.s configuration L. F, Fieser, M. Fieset, Steroids (Reinhotd, New York, 1959) pp 762-763. Review Heusser, Fortschr. Chem, Org. Namrst. 7, 101 (1950). [Pg.1557]

De-Me, 6 - -D-glucopyranosyl P-d-GIu-copyranosyl- (1 - 6) -P-o-glucopyranosyl-(1 - 4) -2,6-dideoxy-D-nho-hexose. Odorotriose C18H32O14 472.442 Isol. from the partial acid hydrolysate of the glycoside Odoroside K (see Uzarigenin). [Pg.886]

See other pages where Uzarigenin is mentioned: [Pg.274]    [Pg.202]    [Pg.202]    [Pg.306]    [Pg.303]    [Pg.40]    [Pg.1308]    [Pg.68]    [Pg.71]    [Pg.90]    [Pg.419]    [Pg.102]    [Pg.108]    [Pg.114]    [Pg.114]    [Pg.114]    [Pg.1557]    [Pg.253]    [Pg.158]    [Pg.158]    [Pg.158]    [Pg.175]    [Pg.101]    [Pg.41]    [Pg.510]    [Pg.510]    [Pg.510]    [Pg.574]    [Pg.592]    [Pg.606]    [Pg.223]    [Pg.248]    [Pg.430]    [Pg.839]    [Pg.1084]    [Pg.1118]   
See also in sourсe #XX -- [ Pg.274 ]

See also in sourсe #XX -- [ Pg.21 , Pg.274 ]

See also in sourсe #XX -- [ Pg.68 , Pg.69 ]

See also in sourсe #XX -- [ Pg.41 ]

See also in sourсe #XX -- [ Pg.223 , Pg.248 ]

See also in sourсe #XX -- [ Pg.839 , Pg.1084 ]



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