4. Synthesis of (±)-Nobilin D (1) and Moscatilin (3): (a) DIBAL-H, DCM, −78 °C to rt, 30 min; (b) PCC, DCM, rt, 5 h, 98% (2 Steps); (c) m-CPBA, DCM, 0 °C to rt, 40 h, Et₃N, MeOH/DCM (1:1), 90%; (d) MeI, K₂CO₃, Acetone, rt, 2 h; (e) DBU, DCM, 0 °C to rt, 11 h (97%, 2 Steps); (f) TBTH, AIBN, C₆H₆, Reflux, 4 h, 88%; (g) m-CPBA, Na₂CO₃, DCM, 0 °C to rt, 36 h, 88%; (h) 1-(Benzyloxy)-4-bromo-2-methoxybenzene, t-BuLi, THF, −40 °C to rt, 0.5 h, 85%; (i) Pd–C/H₂, EtOAc, rt (1: 97%; 3: 95%); (j) Ac₂O or PhCOCl, Et₃N, DMAP, DCM, rt, 5 h, 98%.