The invention relates to processes for preparing a compound of the formula
1
and the enantiomer of said compound, wherein the benzoic acid moiety is attached at position 6 or 7 of the chroman ring, and R
1
, R
2
, and R
3
are as defined herein. The invention further relates to intermediates that are useful in the preparation of the compound of formula X above.
该发明涉及制备式1化合物及其对映体的过程,其中
苯甲酸基团附着在色苷环的6位或7位,并且R1、R2和R3如本文所定义。该发明还涉及在制备上述式X化合物过程中有用的中间体。