Spiro(furan-2(3H), 8'(9'H)-(4, 10a)(iminomethano)(10aH)cyclopenta(4, 5)pyrrolo(2, 1-d)(1, 3, 5)dithiazepine)-3, 5', 11'(4'H)-trione, 9'-(acetyloxy)hexahydro-9'a-hydroxy-4'-(hydroxymethyl)-2'-(4-methoxyphenyl)-4, 4, 5, 12'-tetramethyl-, (2'S-(2'alpha, 4'alpha, 6'aalpha, 8'alpha(R*), 9'alpha, 9'aalpha, 10'aalpha))-

Spiro(furan-2(5H), 2'-tricyclo(3.3.1.13, 7)decan)-5-one, dihydro-4-methylene-

Spiro(furan-3(2H), 2'-furo(2, 3-d)(1, 3)dioxole)-2, 6'a(3'aH)-diol, tetrahydro-2, 3'a-dimethyl-, (2'alpha(R*), 3'aalpha, 6'aalpha)-(-)-

Spiro(furan-3(2H), 2'-furo(3, 4-d)(1, 3)oxathiol)-4(5H)-one, 4', 6'-dihydro-2, 2, 4', 4', 5, 5, 6', 6'-octamethyl-

Spiro(furan-3(2H), 2'-furo(3, 4-d)(1, 3)oxathiol)-4-ol, 4, 4', 5, 6'-tetrahydro-2, 2, 4', 4', 5, 5, 6', 6'-octamethyl-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2'(4'H)-one, 2-(acetyloxy)-5-(3-furanyl)-3', 4, 5, 5', 5'a, 7'-hexahydro-7'-methyl-, (5'aS-(5'aalpha, 6'beta(2R*, 5R*), 7'beta))-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2, 2'(4'H)-dione, 5-(3-furanyl)-3', 4, 5, 5', 5'a, 7', 8', 8'a-octahydro-8'a-methoxy-7'-methyl-, (5'aS-(5'aalpha, 6'beta(R*), 7'beta, 8'aalpha))-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2, 8', 8'a(2'H)-triol, 5-(3-furanyl)-3', 4, 4', 5, 5', 5'a, 7', 8'-octahydro-7'-methyl-, 2, 8'-diacetate, (5'aR-(5'aalpha, 6'beta(2S*, 5S*), 7'beta, 8'beta.8'aalpha))-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2, 8'-diol, 5-(3-furanyl)-2', 3', 4, 4', 5, 5', 5'a, 7', 8', 8'a-decahydro-7'-methyl-, diacetate, (5'aR-(5'aalpha, 6'beta(2S*, 5S*), 7'beta, 8'beta, 8'aalpha))-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2, 8'-diol, 5-(3-furanyl)-3', 4, 4', 5, 5', 5'a, 7', 8'-octahydro-7'-methyl-, (5'aS-(5'aalpha, 6'beta(2S*, 5R*), 7'beta, 8'beta))-

Spiro(furan-3(2H), 6'-(6H)naphtho(1, 8-bc)furan)-2, 8'-diol, 5-(3-furanyl)-3', 4, 4', 5, 5', 5'a, 7', 8'-octahydro-7'-methyl-, diacetate, (5'aS-(5'aalpha, 6'beta(2R*, 5R*), 7'beta, 8'beta))-

Spiro(imidazolidine-4, 1'(2'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-

Spiro(imidazolidine-4, 1'-indan)-2, 5-dione, 6'-(bis(2-chloroethyl)amino)-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1'-allyl-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1-(2-hydroxyethyl)-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1-butyl-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1-ethyl-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1-hexyl-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-1-methyl-

Spiro(imidazolidine-4, 2'(1'H)-naphthalene)-2, 5-dione, 3', 4'-dihydro-2-thio-