tetraene मीनिंग इन हिंदी

Hence, it was not necessary to do anything specific to promote the required sequence of 8? conrotatory and 6? disrotatory cyclizations ( further highlighted in supplementary image ); they occurred spontaneously on generation of tetraene-diol "'15 " '.
In addition to the previously known steroid compounds ergosta-7, 22-diene-3-ol acetate and ergosta-4, 6, 8-( 14 ), 22-tetraene-3-one, three unique triterpenes derivatives of 3-hydroxy-lanostane have been isolated from fruit bodies of " A . hygrometricus ".
The Nicolaou group therefore sought to synthesize endiandric acid C from an acyclic symmetric diacetylenic diol precursor, "'14 "'( as shown ); they began with " mild hydrogenation " in the presence of Lindlar catalyst and quinoline, anticipating tetraene diol "'15 "', cyclooctatriene "'16 "', or the fully cyclized bicyclo [ 4.2 . 0 ] octadiene ( bicyclic diol ) "'17 " '.