{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T07:48:36Z","timestamp":1791186516071,"version":"4.1.0"},"reference-count":39,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2006,3,23]],"date-time":"2006-03-23T00:00:00Z","timestamp":1143072000000},"content-version":"vor","delay-in-days":81,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chirality"],"published-print":{"date-parts":[[2006,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Two brominated sesquiterpenes, majapolene B (<jats:bold>1<\/jats:bold>) and acetylmajapolene B (<jats:bold>2<\/jats:bold>), isolated from the red algal genus <jats:italic>Laurencia<\/jats:italic> were investigated using vibrational circular dichroism (VCD). The ab initio theoretical VCD and IR calculations of <jats:bold>1<\/jats:bold> and <jats:bold>2<\/jats:bold> were performed by density functional theory (DFT) using the B3PW91\/6\u201331G(d,p) basis set. The experimental VCD spectra and corresponding population\u2010weighted theoretical VCD spectra were found to be in excellent agreement in CCl<jats:sub>4<\/jats:sub> solution in the 1800\u2013850 cm<jats:sup>\u22121<\/jats:sup> region, which allowed unambiguous determination of the absolute configurations of (\u2212)\u20101 and (\u2212)\u20102 as 7<jats:italic>S<\/jats:italic>,10<jats:italic>S<\/jats:italic> and 7<jats:italic>S<\/jats:italic>,10<jats:italic>S<\/jats:italic>, respectively. 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