Table 6.

Relevant torsion angles (°)^a for the five-membered furanose ring and the five-membered 1,3-dioxolane ring in compounds 8 and 9.

Ring	Torsion angle	Compound
		8	9
Furanose	O4–C1–C2–C3	26.34(16)	17.62(18)
	C1–C2–C3–C4	−5.02(16)	3.34(18)
	C2–C3–C4–O4	−17.45(15)	−23.03(17)
	C3–C4–O4–C1	35.47(15)	35.73(16)
	C4–O4–C1–C2	−39.06(17)	−33.52(17)
1,3-Dioxolane	O2–C2–C3–O3	−6.58(16)	3.57(18)
	C2–C3–O3–C14	−16.04(16)	11.31(17)
	C3–O3–C14–O2	32.66(16)	−21.76(17)
	O3–C14–O2–C2	−37.19(16)	24.23(17)
	C14–O2–C2–C3	26.66(16)	−17.24(17)

^aStandard deviations in parentheses.