CH2-OCOR CH2-OCOR R'CO0-C-H R'CO0-C-H CH2-OP-0-CH2 CH2NH2 CH2--OP-O-CH2CH2N(CH3)3OH OH OH L--脑磷脂 L-Q-卵磷脂CH2 OCOR C H CH2 OP-O￾O OH R'COO CH2 CH2 NH2 L-α-脑磷脂 CH2 OCOR C H CH2 OP-O￾O OH R'COO CH2 CH2 N + (CH3 ) 3 OH - L-α-卵磷脂