Metastatic leiomyosarcoma of the uterus: unusual presentation of a case with late endobronchial and small bowel metastases

A 56-year-old woman, 8 years after a total abdominal hysterectomy for leiomyosarcoma of the uterus, presented with simultaneous metastatic tumors to the bronchus and the small bowel. The former presented as atelectasis of a lung lobe and the latter as an ileoileal intussusception. Both lesions were resected and proved to be similar to the original tumor. The patient died of metastatic liver disease, 10 years after the hysterectomy and 2 years after resection of the metastases.

SWATAB, a program to obtain required tables for publication from SHELX76 final output

SWATAB is a Fortran IV computer program which helps in obtaining most of the required tables for crystal structure publication from the widely used SHELX76 program output. The strategy, installation, required local modifications, merits and limitations are discussed.

Structure of columbin, a diterpenoid furanolactone from Tinospora cordifolia Miers

(1S,4R,5R,8S,10R,12S)-4-Hydroxy-15,16-epoxycleroda-2,12(16),14- trieno-17,12: 18,1-biscarbolactone, C20H22O6, Mr = 358.2, m.p. = 453-454 K, orthorhombic, P2(1)2(1)2(1), a = 7.3869 (6), b = 11.986 (1), c = 19.896 (2) A, V = 1761.65 A3, Z = 4, Dx = 1.351, Dm(by flotation) = 1.349 g cm-3, lambda(Cu K alpha) = 1.5418 A, mu = 8.36 cm-1, F(000) = 760, T = 295 K, R = 0.0432 for 1662 observed reflections. Two terpene rings, two delta-lactones, two methyl groups, a tertiary hydroxyl group and a beta-substituted furan ring are present in the structure. The H atoms at C(12) and C(8) are alpha- and beta-oriented. The terpene ring A is locked into a boat conformation by the C(1)-C(4) lactone bridge. The furan ring is attached equatorially at atom C(12). The hydroxyl group is involved in intramolecular hydrogen bonding.

Structure of tinosporide, a diterpenoid furanolactone from Tinospora cordifolia Miers

(1S,2S,3R,4R,5R,8S,10R,12S)-4-Hydroxy-2,3:15,16-diepoxycleroda-13( 16),14- dieno-17,12:18,1-biscarbolactone, C20H22O7, Mr = 374, m.p. = 509-511 K, orthorhombic, P2(1)2(1)2(1), a = 9.191 (2), b = 13.8230 (6), c = 26.956 (2) A, V = 3424.50 A3, Z = 8, Dx = 1.450, Dm (by flotation) = 1.446 g cm-3, lambda (Cu K alpha) = 1.5418 A, mu = 8.20 cm-1, F(000) = 1584, T = 295 K, R = 0.0464, wR = 0.0579 for 3437 observed reflections. The asymmetric unit contains two molecules. The structure resembles that of a similar compound [Swaminathan, Sinha, Bhatt & Sabata (1988). Acta Cryst. C44, 1421-1424] with atom H(15) replacing the tertiary hydroxyl group at C(8). Atoms H(4) and H(15) are alpha- and beta-oriented respectively at sites C(12) and C(8). The terpene ring A is locked into a boat conformation by the C(1)-C(4) lactone bridge. The hydroxyl at C(4) is involved in hydrogen bonding.