Treatment of compounds 4a–c with triethyl orthoformate in acetic anhydride at reflux gave the 2-ethoxTyrmeaettmhyelnetneoafmcoinmop-4o-u(4n-dhaslo4ap–hcenwyilt)h-6t-rmieetthhyolxoyr-4thHo-fboernmzaot[eh]icnhraocmeteicnea-n3h-cyadrbriodneitaritlerseflu5xa–gca.ve Sutbhseeq2-uee...
The vegetation type as a whole is classified as endangered [36]. The remnants of indigenous forest form part of eastern scarp forest, usually located at an altitude of 100–1000 m [37], and is described as a refuge forest that survived the last glacial maximum (≈18,000 BP) [38]. ...