16,18-Dihydroxy-8-oxo-8-demethyl-5α-kolava-3,13-diene-15,17-dioic acid 15,16:17,18-dilactone (desmethyl-marrubiaketone)

(5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S

(5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S,27R)-5α-Chloro-16,24-cyclo-13,14-secoergost-2-ene-18,26-dioic acid-14:17,14:27-diepoxy-6β,13,20,22-tetrahydroxy-1,15-dioxo-γ-lactone δ-lactone methanol solvate monohydrate

✍ Choudhary, M. Iqbal ;Yousuf, Sammer ;Atta-ur-Rahman, ;Anjum, Shazia ;Fun, Hoong 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 308 KB

The title compound, C 28 H 27 O 10 ClÁCH 3 OHÁH 2 O, was isolated from Physalis minima. The rigid molecule consists of eight fused rings involving three lactones. The spiro-fused -lactone rings are in half-chair and envelope conformations. The spirofused -lactone rings are fused to a cyclohexene rin

4,17-Diacetyl-3α,8,12α,18β-tetramethyl-4

4,17-Diacetyl-3α,8,12α,18β-tetramethyl-4,5,7,14,16,17-hexaazapentacyclo[10.6.2.02,11.03,8.013,18]icosa-5,7,9,13,15,19-hexaene (Ia) 0·5-methanol solvate and trimethyl 2α,8β-dimethyl-3,4,6-triazatricyclo[6.2.2.02,7]dodeca-4,6,9,11-tetraene-3,9,10-tricarboxylate (IIb)

✍ Filippini, G. ;Pilati, T. 📂 Article 📅 1987 🏛 International Union of Crystallography 🌐 English ⚖ 437 KB

(5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S

(5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S,27R)-5α-Chloro-16,24-cyclo-13,14-secoergost-2-ene-18,26-dioic acid-14:17,14:27-diepoxy-6β,13,20,22-tetrahydroxy-1,15-dioxo-γ-lactone δ-lactone methanol solvate monohydrate. Corrigendum

✍ Choudhary, M. Iqbal ;Yousuf, Sammer ;Atta-ur-Rahman, ;Anjum, Shazia ;Fun, Hoong 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 36 KB