1987
DOI: 10.1016/s0040-4039(00)96256-7
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Lophirone A, A biflavonoid with unusual skeleton from Lophira lanceolata.

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Cited by 53 publications
(29 citation statements)
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“…All these signals were in good agreement with those of the Lophirone A skeleton (Ghogomu et al. 1987 ). The complete assignment of all proton and carbon resonances was achieved after careful analysis of COSY, HSQC and HMBC techniques.…”
Section: Resultssupporting
confidence: 81%
See 1 more Smart Citation
“…All these signals were in good agreement with those of the Lophirone A skeleton (Ghogomu et al. 1987 ). The complete assignment of all proton and carbon resonances was achieved after careful analysis of COSY, HSQC and HMBC techniques.…”
Section: Resultssupporting
confidence: 81%
“…Previous phytochemical analyses of the genus Lophira have resulted in the isolation of biflavonoids and tetraflavonoids (Ghogomu et al. 1987 , 1989a , 1989b , 1990 ; Tih et al. 1992 ; Pegnyemb et al.…”
Section: Introductionmentioning
confidence: 99%
“…The six protons singlet indicated that the two methoxyl groups are symmetrically positioned. The other 17 signals were very similar with respect to shifts and splitting pattern with those of lophirone A [15] and afzelone D [16] reported earlier. The existence of three methoxyl groups implied that compound 7 was tri-methoxy derivative of lophirone A, that is, lophirone A trimethyl ether ( Figure 1 and Table 1).…”
Section: Introductionsupporting
confidence: 83%
“…The methanolic extract of the stem bark of C. zenkeri was fractionated and purified by a silica gel column chromatography, affording five known compounds: (Z,Z)-9,12-octadecadienoic acid (1) (Park et al 2011), racemic serotobenine (2) (Ngono Bikobo et al 2015;Sato et al 1985), agathisflavone (3) (Mashima et al 1970;Bayiha Ba Njock et al 2011), lophirone A (4) (Ghogomu et al 1987) and lophirone F (5) (Ghogomu et al 1990) together with one newly described compound, zenkerinol (6, Figure 1). In addition to these compounds, three new serotobenine derivatives were prepared by using racemic serotobenine (2) as starting material (Scheme 1).…”
Section: Resultsmentioning
confidence: 99%