Millettonine, a guanidine alkaloid from Millettia laurentii

Kamnaing, Pierre; Free, Samuel N. Y. Fanso; Fomum, Zacharias Tanee; Martin, Marie‐Thérèse; Bodo, Bernard

doi:10.1016/s0031-9422(00)89766-6

Cited by 19 publications

(7 citation statements)

References 6 publications

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“…In some, these isopentenyl groups have undergone cyclization to produce hexahydroimidazo-pyrimidines such as those found in Alchomea javanensis (4). Cyclized guanidine alkaloids, probably of sesquiterpene origin, are known from Milletia laurentii (6,7). This work, however, constitutes the first report of the natural occurrence of monoterpenoid (geranyl) derivatives of guanidine.…”

Section: And Discussionmentioning

confidence: 89%

Bioactive Guanidine Alkaloids from Pterogyne nitens

Bolzani¹,

Gunatilaka²,

Kingston³

1995

J. Nat. Prod.

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Section: And Discussionmentioning

confidence: 89%

Bioactive Guanidine Alkaloids from Pterogyne nitens

Bolzani¹,

Gunatilaka²,

Kingston³

1995

J. Nat. Prod.

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“…A guanidine alkaloid Millettonine is isolated from the stem bark of Millottia laurentii . Numerous synthetic compounds with pyrano[4,3- d ]pyrimidine ring system have been reported to display antiplatelet, analgesic, antithrombotic, antiphlogistic, and antiinflammatory activities .…”

Section: Synthetic Applications Of 56-dihydrobenzo[h]chromenes In Org...mentioning

confidence: 99%

Natural and Synthetic Chromenes, Fused Chromenes, and Versatility of Dihydrobenzo[h]chromenes in Organic Synthesis

2014

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“…Millettia laurentii, often known as African rosewood, is a tree native to Central and West Africa that is used to make the exotic timber known as wenge. It is mostly found in the nations of Equatorial Guinea, the Republic of Congo, the Democratic Republic of the Congo, Cameroon, and Gabon [18]. The bark of M. laurentii is used for treating various ailments including diabetes, skin issues, fever, rheumatism, hernia, liver complaints, constipation, reducing sores, smallpox, epilepsy, and abscesses.…”

Section: Millettia Laurentii (Wenge) Informationmentioning

confidence: 99%

Upscaling Millettia laurentii carpentry sawdust into natural dyes: imparting antimicrobial, antioxidant, and UV-protective finish to wool yarns through an ecological and sustainable natural dyeing process

Safapour

Rather

Mir

et al. 2023

Biomass Conv. Bioref.

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This work presents the valorization of Millettia laurentii carpentry sawdust waste into sustainable natural dye for ecological dyeing and functional finishing of wool textiles. A simple aqueous extraction method was used to isolate natural dye, then the extracted bio-dye was subjected to different qualitative and quantitative analyses. Wool yarns were dyed in conjunction with different metal salts (aluminum sulfate, ferrous sulfate, copper sulfate, and zinc sulfate) and their binary combinations (Al/Fe, Al/Cu, Al/Zn, Fe/Cu, Fe/Zn, and Cu/Zn) as mordants. Practically, 11 different eco-friendly shades were developed of varying hues and tones employing 75% (o.w.f.) of M. laurentii sawdust. The antibacterial action against E. coli and S. aureus, free radical scavenging power, and UV protection properties of dyed wool yarns were recorded. The introduction of different metal salts and their combinations enhanced the color properties with a semi-durable antimicrobial and antioxidant finish. Statistical analysis of the color parameters of binary mixed metal combinations confirms the synergetic contribution of individual metal ions in each combination. The amount of individual mordant adsorbed (weight percentage) from a particular combination was further assessed by EDX analysis of mordanted dyed wool yarns. Overall, the results suggest that copper sulfate and ferrous sulfate pre-treatment were the best combinations (Fe/Cu) for wool yarns in conjunction with 75.0% (o.w.f.) M. laurentii sawdust, considering the color fastness, antimicrobial, and antioxidant properties. The results provide ample scope for the upcycling of timber industry waste into a natural dye for the eco-friendly coloration of wool textiles.

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Millettonine, a guanidine alkaloid from Millettia laurentii

Cited by 19 publications

References 6 publications

Bioactive Guanidine Alkaloids from Pterogyne nitens

Bioactive Guanidine Alkaloids from Pterogyne nitens

Natural and Synthetic Chromenes, Fused Chromenes, and Versatility of Dihydrobenzo[h]chromenes in Organic Synthesis

Upscaling Millettia laurentii carpentry sawdust into natural dyes: imparting antimicrobial, antioxidant, and UV-protective finish to wool yarns through an ecological and sustainable natural dyeing process

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