Lignans and an aromatic acid from Cinnamomum philippinense

Acretoside, a new sucrose ester fromAristolochia cretica*

“…All proton and carbon signals in the NMR spectra (table 1) of compound 1 were assigned from its COSY, DEPT, HMQC and HMBC spectra. (7) [8] aristolochic acid II (8) [2], and ariskanin A (9) [4] were in complete agreement with published data.…”

“…1)-a-D-glucopyranoside (1), a new sucrose ester. Moreover, its known analogues arillatose B (2), two phenylpropanoid glucose esters identified as 6-O-p-coumaroyl-a-D-glucopyranose (3) and 6-O-p-coumaroylb-D-glucopyranose (4), and five derivatives of aristolochic acids identified as aristolochic acid I (5), 7-hydroxyaristolochic acid I (6), aristolochic acid IIIa (7), aristolochic acid II (8) and ariskanin A (9) have been isolated (figure 1).…”

Antioxidant Activity of Butane Type Lignans, Secoisolariciresinol, Dihydroguaiaretic Acid, and 7,7′-Oxodihydroguaiaretic Acid

“…DGArelated compounds oxidized at the benzylic position have been isolated. 2,15,16) Our result would contribute to the effective use of natural lignans as antioxidants. …”

Two new sesquiterpenes from the fruits of Fissistigma villosissimum

“…Structures of the known compounds 10β-hydroxyisodauc-6-en-14-al (3) [5], 4(15)-eudesmene-1β,7α,11-triol (4) [6], 4(15)-eudesmene-1β,6α-diol (5) [7][8][9], spathulenol (6) [10][11][12], alloromadendran-4β,10α-diol (7) [13], 10α-hydroxycadin-4-en- 15-al (8) [14,15], shikimic acid (9) [16], protocatechuic acid (10) [17], vanillic acid (11) [18], protocatechualdehyde (12) [19] were determined by spectral data analysis and comparison with reported data.…”