CV.Serakop Makmur

Company Description

Indonesian Agarwood (A. malaccensis/A. agallocha).Jinkohol (2b-hydroxy-(+)-prezizane) was characterised by Nakanishi et al. (1980) following work on a benzene extract of Indonesian agarwood imported via Singapore.In 1983, two new sesquiterpenes: jinkoh-eremol and jinkohol II were characterised by the same author from ?Aquliaria sp; (not A. agallocha) probably A. malaccensis Benth.? from agarwood ?collected in Indoneisa and imported via Singapore ?, which they called ?type? B agarwood, reserving the description ?type A? for agarwood from A. agallocha.The authors reasoned that ?type B? agarwood contained nootkatane (e.g. kusunol, jinkoh-eremol), spirovetivane (e.g. agarospirol) and tricyclic (+)-prezizane (e.g. jinkohol, jinkohol II) type sequiterpenes, and that these structural types also occur in vetiver oil, and may evolve from a common precursor. The authors also indicated that four compounds possessed intense odours (agarospirol, kusunol, jinkohol & jinkohol II) and ?appear to be the source of the fragrance of agarwood?.Subsequently Nakanishi et al. (1984) isolated alpha-agarofuran, (-)-10-epi-gamma-eudesmol and oxo-agarospirol as major constituents from ?type B? agarwood.Yoneda et al. (1984) were able to list the major sesquiterpenes of agarwood from type A and type B agarwoods imported from Indonesia and Vietnam through Singapore. A. agallocha (agawood type A) was found to contain b-agarofuran 0.6%, nor-ketoagarofuran 0.6%, agarspirol 4.7%, jinko-eremol 4.0%, kusunol 2.9%, dihydrokaranone 2.4%, and oxo-agarospirol 5.8%. In type B agarwood the following compounds were identified a-agarofuran, (-)-10-epi-g-eudesmol 6.2%, agarospirol 7.2%, jinkohol 5.2%, jinko-eremol 3.7%, kusunol 3.4%, jinkohol II 5.6%, and oxo-agarospirol 3.1%. From their findings the authors concluded that type A wood exclusively contains nor-ketoagarofuran and dihydrokaranone, but does not contain (-)-10-epi-gamma-eudesmol, jinkohol and jinkohol II, find