The present invention relates to novel substituted benzfurochromenes and related compounds having the general formula (I), salts and chiral, achiral derivatives thereof； wherein R1, R2, R3, R4, R5, R6, R7, R8 are independently selected from the groups consisting of hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkylthio, optionally substituted amino, optionally substituted acylamino, optionally substituted arylamino, optionally substituted acylthio, optionally substituted acyl, optionally substituted aroyl, optionally substituted acyloxy, optionally substituted thioamido, halogens, nitriles, esters, hydroxy, mercapto, carbontrifluoride, nitro but not limited to this； wherein R1R2 or R2R3 or R6R7 may be connected and form either a five membered ring or a six membered ring such as optionally substituted furan, optionally substituted dihydrofuran, optionally substituted pyran； or may be connected through a methylenedeoxy moiety； wherein X is selected from the units consisting of optionally a ketone group, optionally a methylene group, optionally substituted methylene group, optionally substituted alkene； wherein Y and Z is selected from the units consisting of CH, C—OH, C-Me, C—OMe with the proviso that bond between Y and Z is a single bond； Wherein Y and Z may be a carbon atom with the proviso that bond between Y and Z is a double bond. The compounds of the general formula is useful for the prevention and treatment of bone related disorders.
