| abstract |
PCT No. PCT/EP94/03889 Sec. 371 Date May 31, 1996 Sec. 102(e) Date May 31, 1996 PCT Filed Nov. 24, 1994 PCT Pub. No. WO95/15320 PCT Pub. Date Jun. 8, 1995In a process for the production of 8 alpha ,12-oxido-13,14,15,16-tetranorlabdane by dehydration of 8 alpha ,12-dihydroxy-13,14,15,16-tetranorlabdane (diol), wherein the diol is subjected to cyclizing dehydration in the presence of 5 to 80% by weight, based on the diol, of at least one alumino layer silicate selected from K catalysts which have an acid charge of less than 100 mval/100 g. |