Table 1.

¹H and ¹³C NMR Spectral Data of Compound 1 (500 MHz for δ_H; 125 MHz for δ_C).

Position	Compound 1
	δ C δ H (J in Hz)
1 3 3a 4 5 6 7 7a 8 9 10 OMe	Not observed 147.0 142.3 111.3 147.2 111.9 158.7 110.6 111.8 19.3 13.9 56.1	- - - 6.93 d (8.0) 7.62 t (8.0) 7.21 d (8.0) - - 5.63 t (7.5) 2.48 m 1.14 t (7.0) 4.01 s