(10)-OCHs CHOCH2CH2CHs C.HOCH.CH.CH2CHs 0-Qa2, 8a CH BrCHa OH CH3COCH2CH=CHCOOH CCN (14) CONa OOH 0 (15) CCH2CH2COOH ○CHCH,CH,COoH C2H5OH CHs CaHs OH (16) CH3C(CH2OH)3 HCOOH CH3 OMgI OH (17) ⊙CH OH 9 (18) Br OH a OH 14-10 由大到小： (1)B A C D (2)B A C D (3)D A B C (4④)ABCD (⑤)DCAB (6)D B C A (7)D C B A (8)A D C B8 (10) OC2H5 C2H5O CCH2CH2CH3 O C2H5O CH2CH2CH2CH3 CH3 Br O (11) CH3 O B CH3 r O (12) CH3 Br Br O OH (13) CH3COCH2CH2CH CN CH3COCH2CH=CHCOOH O O C OH (14) OONa C OH OOH (15) CCH2CH2COOH O CH2CH2CH2COOH O C2H5 OH C2H5 OH C2H5 (16) CH3CH2CHO CH3C(CH2OH)3 + HCOOH CH3 O (17) O CH3 OMgI O OH OH Br O O (18) O O O O Br Br OH OH Cl O O Cl O O Cl Cl 14-10